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Vulnerability Details :

CVE-2023-3725

Summary
Assigner-zephyr
Assigner Org ID-e2e69745-5e70-4e92-8431-deb5529a81ad
Published At-06 Oct, 2023 | 20:10
Updated At-13 Feb, 2025 | 16:56
Rejected At-
Credits

Potential buffer overflow vulnerability in the Zephyr CANbus subsystem

Potential buffer overflow vulnerability in the Zephyr CAN bus subsystem

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–ŒCommon Vulnerabilities and Exposures (CVE)
cve.org
Assigner:zephyr
Assigner Org ID:e2e69745-5e70-4e92-8431-deb5529a81ad
Published At:06 Oct, 2023 | 20:10
Updated At:13 Feb, 2025 | 16:56
Rejected At:
â–ŒCVE Numbering Authority (CNA)
Potential buffer overflow vulnerability in the Zephyr CANbus subsystem

Potential buffer overflow vulnerability in the Zephyr CAN bus subsystem

Affected Products
Vendor
Zephyr Projectzephyrproject-rtos
Product
Zephyr
Package Name
Zephyr
Repo
https://github.com/zephyrproject-rtos/zephyr
Default Status
unaffected
Versions
Affected
  • From * through 3.4 (git)
Problem Types
TypeCWE IDDescription
CWECWE-120CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWECWE-121CWE-121 Stack-based Buffer Overflow A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Type: CWE
CWE ID: CWE-120
Description: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Type: CWE
CWE ID: CWE-121
Description: CWE-121 Stack-based Buffer Overflow A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Metrics
VersionBase scoreBase severityVector
3.17.6HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Version: 3.1
Base score: 7.6
Base severity: HIGH
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-100CAPEC-100 Overflow Buffers
CAPEC ID: CAPEC-100
Description: CAPEC-100 Overflow Buffers
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3
N/A
http://www.openwall.com/lists/oss-security/2023/11/07/1
N/A
http://seclists.org/fulldisclosure/2023/Nov/1
N/A
http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
N/A
Hyperlink: https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2023/11/07/1
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2023/Nov/1
Resource: N/A
Hyperlink: http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
Resource: N/A
â–ŒAuthorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3
x_transferred
http://www.openwall.com/lists/oss-security/2023/11/07/1
x_transferred
http://seclists.org/fulldisclosure/2023/Nov/1
x_transferred
http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
x_transferred
Hyperlink: https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3
Resource:
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2023/11/07/1
Resource:
x_transferred
Hyperlink: http://seclists.org/fulldisclosure/2023/Nov/1
Resource:
x_transferred
Hyperlink: http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
â–ŒNational Vulnerability Database (NVD)
nvd.nist.gov
Source:vulnerabilities@zephyrproject.org
Published At:06 Oct, 2023 | 21:15
Updated At:22 Dec, 2023 | 19:24

Potential buffer overflow vulnerability in the Zephyr CAN bus subsystem

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.17.6HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 7.6
Base severity: HIGH
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CPE Matches

Zephyr Project
zephyrproject
>>zephyr>>Versions up to 3.4.0(inclusive)
cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-787Primarynvd@nist.gov
CWE-120Secondaryvulnerabilities@zephyrproject.org
CWE-121Secondaryvulnerabilities@zephyrproject.org
CWE ID: CWE-787
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-120
Type: Secondary
Source: vulnerabilities@zephyrproject.org
CWE ID: CWE-121
Type: Secondary
Source: vulnerabilities@zephyrproject.org
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.htmlvulnerabilities@zephyrproject.org
Third Party Advisory
http://seclists.org/fulldisclosure/2023/Nov/1vulnerabilities@zephyrproject.org
Mailing List
Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/11/07/1vulnerabilities@zephyrproject.org
Mailing List
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3vulnerabilities@zephyrproject.org
Exploit
Vendor Advisory
Hyperlink: http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
Source: vulnerabilities@zephyrproject.org
Resource:
Third Party Advisory
Hyperlink: http://seclists.org/fulldisclosure/2023/Nov/1
Source: vulnerabilities@zephyrproject.org
Resource:
Mailing List
Third Party Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2023/11/07/1
Source: vulnerabilities@zephyrproject.org
Resource:
Mailing List
Hyperlink: https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-2g3m-p6c7-8rr3
Source: vulnerabilities@zephyrproject.org
Resource:
Exploit
Vendor Advisory

Change History

0
Information is not available yet

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Action-Not Available
Vendor-Zephyr Project
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CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2023-4263
Matching Score-10
Assigner-Zephyr Project
ShareView Details
Matching Score-10
Assigner-Zephyr Project
CVSS Score-7.6||HIGH
EPSS-0.08% / 24.15%
||
7 Day CHG~0.00%
Published-13 Oct, 2023 | 20:42
Updated-13 Feb, 2025 | 17:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
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Potential buffer overflow vulnerability in the Zephyr IEEE 802.15.4 nRF 15.4 driver

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE ID-CWE-121
Stack-based Buffer Overflow
CVE-2023-6249
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-8||HIGH
EPSS-0.18% / 38.93%
||
7 Day CHG~0.00%
Published-18 Feb, 2024 | 07:27
Updated-23 Jan, 2025 | 16:49
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ipm: signed to unsigned conversion problem in esp32_ipm_send

Signed to unsigned conversion esp32_ipm_send

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-704
Incorrect Type Conversion or Cast
CVE-2022-2993
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-8.6||HIGH
EPSS-0.46% / 63.94%
||
7 Day CHG~0.00%
Published-12 Dec, 2022 | 01:50
Updated-22 Apr, 2025 | 18:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
bt: host: Wrong key validation check

There is an error in the condition of the last if-statement in the function smp_check_keys. It was rejecting current keys if all requirements were unmet.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-670
Always-Incorrect Control Flow Implementation
CVE-2021-3323
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-8.3||HIGH
EPSS-0.41% / 61.49%
||
7 Day CHG~0.00%
Published-12 Oct, 2021 | 21:50
Updated-16 Sep, 2024 | 17:07
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-191
Integer Underflow (Wrap or Wraparound)
CVE-2021-3319
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-6.5||MEDIUM
EPSS-0.43% / 62.89%
||
7 Day CHG~0.00%
Published-05 Oct, 2021 | 20:50
Updated-16 Sep, 2024 | 22:14
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses

DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses. Zephyr versions >= > v2.4.0 contain NULL Pointer Dereference (CWE-476), Attempt to Access Child of a Non-structure Pointer (CWE-588). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94jg-2p6q-5364

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-588
Attempt to Access Child of a Non-structure Pointer
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2025-10458
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-7.6||HIGH
EPSS-0.02% / 6.41%
||
7 Day CHG~0.00%
Published-19 Sep, 2025 | 05:20
Updated-29 Oct, 2025 | 18:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth: le_conn_rsp does not sanitize CID, MTU, MPS values

Parameters are not validated or sanitized, and are later used in various internal operations.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-130
Improper Handling of Length Parameter Inconsistency
CVE-2024-6135
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-7.6||HIGH
EPSS-0.17% / 37.06%
||
7 Day CHG~0.00%
Published-13 Sep, 2024 | 19:51
Updated-19 Sep, 2024 | 01:34
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BT:Classic: Multiple missing buf length checks

BT:Classic: Multiple missing buf length checks

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-369
Divide By Zero
CVE-2024-4785
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-7.6||HIGH
EPSS-0.17% / 37.28%
||
7 Day CHG~0.00%
Published-19 Aug, 2024 | 22:10
Updated-17 Sep, 2025 | 05:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BT: Missing Check in LL_CONNECTION_UPDATE_IND Packet Leads to Division by Zero

BT: Missing Check in LL_CONNECTION_UPDATE_IND Packet Leads to Division by Zero

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-369
Divide By Zero
CVE-2020-10062
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-9||CRITICAL
EPSS-5.82% / 90.56%
||
7 Day CHG~0.00%
Published-05 Jun, 2020 | 17:37
Updated-17 Sep, 2024 | 00:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Packet length decoding error in MQTT

An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-193
Off-by-one Error
CVE-2020-13601
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-9||CRITICAL
EPSS-0.43% / 62.82%
||
7 Day CHG~0.00%
Published-24 May, 2021 | 21:40
Updated-17 Sep, 2024 | 01:01
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Possible read out of bounds in dns read

Possible read out of bounds in dns read. Zephyr versions >= 1.14.2, >= 2.3.0 contain Out-of-bounds Read (CWE-125). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-mm57-9hqw-qh44

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-125
Out-of-bounds Read
CVE-2025-7403
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-7.6||HIGH
EPSS-0.02% / 6.41%
||
7 Day CHG~0.00%
Published-19 Sep, 2025 | 05:19
Updated-29 Oct, 2025 | 18:05
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth: bt_conn_tx_processor unsafe handling

Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-123
Write-what-where Condition
CVE-2022-3806
Matching Score-8
Assigner-Zephyr Project
ShareView Details
Matching Score-8
Assigner-Zephyr Project
CVSS Score-9.8||CRITICAL
EPSS-0.41% / 61.38%
||
7 Day CHG~0.00%
Published-19 Jan, 2023 | 00:00
Updated-03 Apr, 2025 | 20:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth HCI Error Handling Double Free

Inconsistent handling of error cases in bluetooth hci may lead to a double free condition of a network buffer.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-415
Double Free
CVE-2023-5753
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.23% / 45.73%
||
7 Day CHG~0.00%
Published-24 Oct, 2023 | 16:09
Updated-13 Feb, 2025 | 18:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Potential buffer overflow vulnerabilities in the Zephyr Bluetooth subsystem

Potential buffer overflows in the Bluetooth subsystem due to asserts being disabled in /subsys/bluetooth/host/hci_core.c

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE ID-CWE-191
Integer Underflow (Wrap or Wraparound)
CVE-2023-5139
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-4.4||MEDIUM
EPSS-0.27% / 49.83%
||
7 Day CHG~0.00%
Published-26 Oct, 2023 | 04:40
Updated-13 Feb, 2025 | 17:19
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Potential buffer overflow vulnerability in the Zephyr STM32 Crypto driver

Potential buffer overflow vulnerability at the following location in the Zephyr STM32 Crypto driver

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE-2023-5184
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-7||HIGH
EPSS-0.32% / 55.26%
||
7 Day CHG~0.00%
Published-27 Sep, 2023 | 17:26
Updated-18 Jun, 2025 | 14:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Potential signed to unsigned conversion errors and buffer overflow vulnerabilities in the Zephyr IPM driver

Two potential signed to unsigned conversion errors and buffer overflow vulnerabilities at the following locations in the Zephyr IPM drivers.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE ID-CWE-195
Signed to Unsigned Conversion Error
CWE ID-CWE-681
Incorrect Conversion between Numeric Types
CVE-2022-1042
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.2||HIGH
EPSS-0.11% / 29.15%
||
7 Day CHG~0.00%
Published-26 Jul, 2022 | 04:25
Updated-16 Sep, 2024 | 20:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Out-of-bound write vulnerability in the Bluetooth mesh core stack can be triggered during provisioning

In Zephyr bluetooth mesh core stack, an out-of-bound write vulnerability can be triggered during provisioning.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2022-1841
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-7.2||HIGH
EPSS-0.24% / 47.52%
||
7 Day CHG~0.00%
Published-31 Aug, 2022 | 19:40
Updated-16 Sep, 2024 | 22:14
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Out-of-bound write in tcp_flags

In subsys/net/ip/tcp.c , function tcp_flags , when the incoming parameter flags is ECN or CWR , the buf will out-of-bounds write a byte zero.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2022-1041
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.2||HIGH
EPSS-0.11% / 29.15%
||
7 Day CHG~0.00%
Published-26 Jul, 2022 | 04:25
Updated-17 Sep, 2024 | 00:11
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Out-of-bound write vulnerability in the Bluetooth mesh core stack can be triggered during provisioning

In Zephyr bluetooth mesh core stack, an out-of-bound write vulnerability can be triggered during provisioning.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2025-20746
Matching Score-6
Assigner-MediaTek, Inc.
ShareView Details
Matching Score-6
Assigner-MediaTek, Inc.
CVSS Score-6.7||MEDIUM
EPSS-0.01% / 0.35%
||
7 Day CHG~0.00%
Published-04 Nov, 2025 | 06:20
Updated-26 Feb, 2026 | 17:47
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10010441; Issue ID: MSV-3967.

Action-Not Available
Vendor-rdkcentralOpenWrtThe Linux FoundationZephyr ProjectMediaTek Inc.Google LLC
Product-mt8676mt6986dmt8678mt2737mt6835mt6990mt6897mt6991yoctomt6986mt6878androidmt6989mt6985mt8755openwrtmt6899rdk-bmt8893mt2718mt6982zephyrmt6886MT2718, MT2737, MT6835, MT6878, MT6886, MT6897, MT6899, MT6982, MT6985, MT6986, MT6986D, MT6989, MT6990, MT6991, MT8676, MT8678, MT8755, MT8893
CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2021-3966
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-9.6||CRITICAL
EPSS-0.12% / 29.82%
||
7 Day CHG~0.00%
Published-11 Jan, 2023 | 00:00
Updated-09 Apr, 2025 | 18:29
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Usb bluetooth device ACL read cb buffer overflow

usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE-2025-20747
Matching Score-6
Assigner-MediaTek, Inc.
ShareView Details
Matching Score-6
Assigner-MediaTek, Inc.
CVSS Score-6.7||MEDIUM
EPSS-0.01% / 0.35%
||
7 Day CHG~0.00%
Published-04 Nov, 2025 | 06:20
Updated-26 Feb, 2026 | 17:47
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10010443; Issue ID: MSV-3966.

Action-Not Available
Vendor-rdkcentralOpenWrtThe Linux FoundationZephyr ProjectMediaTek Inc.Google LLC
Product-mt8676mt6986dmt8678mt2737mt6835mt6990mt6897mt6991yoctomt6986mt6878androidmt6989mt6985mt8755openwrtmt6899rdk-bmt8893mt2718mt6982zephyrmt6886MT2718, MT2737, MT6835, MT6878, MT6886, MT6897, MT6899, MT6982, MT6985, MT6986, MT6986D, MT6989, MT6990, MT6991, MT8676, MT8678, MT8755, MT8893
CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2025-20696
Matching Score-6
Assigner-MediaTek, Inc.
ShareView Details
Matching Score-6
Assigner-MediaTek, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.02% / 4.37%
||
7 Day CHG-0.00%
Published-04 Aug, 2025 | 01:49
Updated-18 Aug, 2025 | 15:42
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS09915215; Issue ID: MSV-3801.

Action-Not Available
Vendor-rdkcentralThe Linux FoundationOpenWrtMediaTek Inc.Zephyr ProjectGoogle LLC
Product-mt6983mt6835mt8676openwrtmt6897mt6899mt6765mt6877mt6895mt6739mt8188mt6761mt6989androidmt6991mt6990mt6885mt8370mt6879mt6893mt6781mt6853rdk-bmt6889mt6886mt6985mt6813mt6833mt8390mt6883mt6878zephyrmt6855mt6768mt8196yoctomt6789MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6813, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6990, MT6991, MT8188, MT8196, MT8370, MT8390, MT8676
CWE ID-CWE-787
Out-of-bounds Write
CVE-2021-3835
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.2||HIGH
EPSS-0.12% / 29.82%
||
7 Day CHG~0.00%
Published-07 Feb, 2022 | 22:00
Updated-17 Sep, 2024 | 00:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Buffer overflow in usb device class

Buffer overflow in usb device class. Zephyr versions >= v2.6.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fm6v-8625-99jf

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2021-3861
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.2||HIGH
EPSS-0.05% / 15.00%
||
7 Day CHG~0.00%
Published-07 Feb, 2022 | 22:00
Updated-16 Sep, 2024 | 16:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
The RNDIS USB device class includes a buffer overflow vulnerability

The RNDIS USB device class includes a buffer overflow vulnerability. Zephyr versions >= v2.6.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hvfp-w4h8-gxvj

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2021-3434
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-4.9||MEDIUM
EPSS-0.12% / 30.64%
||
7 Day CHG~0.00%
Published-28 Jun, 2022 | 19:45
Updated-17 Sep, 2024 | 00:36
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
L2CAP: Stack based buffer overflow in le_ecred_conn_req()

Stack based buffer overflow in le_ecred_conn_req(). Zephyr versions >= v2.5.0 Stack-based Buffer Overflow (CWE-121). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-8w87-6rfp-cfrm

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2021-3330
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-7.1||HIGH
EPSS-0.11% / 28.76%
||
7 Day CHG~0.00%
Published-12 Oct, 2021 | 21:50
Updated-17 Sep, 2024 | 01:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr

RCE/DOS: Linked-list corruption leading to large out-of-bounds write while sorting for forged fragment list in Zephyr. Zephyr versions >= >=2.4.0 contain Out-of-bounds Write (CWE-787). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fj4r-373f-9456

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2020-13600
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-7||HIGH
EPSS-0.05% / 15.84%
||
7 Day CHG~0.00%
Published-24 May, 2021 | 21:40
Updated-16 Sep, 2024 | 16:12
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Malformed SPI in response for eswifi can corrupt kernel memory

Malformed SPI in response for eswifi can corrupt kernel memory. Zephyr versions >= 1.14.2, >= 2.3.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hx4p-j86p-2mhr

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2024-8798
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-7.5||HIGH
EPSS-0.25% / 48.31%
||
7 Day CHG~0.00%
Published-15 Dec, 2024 | 23:23
Updated-17 Sep, 2025 | 06:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth: classic: avdtp: missing buffer length check

No proper validation of the length of user input in olcp_ind_handler in zephyr/subsys/bluetooth/services/ots/ots_client.c.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2024-6444
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.09% / 24.53%
||
7 Day CHG~0.00%
Published-04 Oct, 2024 | 06:14
Updated-13 Nov, 2024 | 15:24
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth: ots: missing buffer length check

No proper validation of the length of user input in olcp_ind_handler in zephyr/subsys/bluetooth/services/ots/ots_client.c.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyrzephyr
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2024-6443
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.12% / 29.95%
||
7 Day CHG~0.00%
Published-04 Oct, 2024 | 05:56
Updated-12 Nov, 2024 | 19:29
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
zephyr: out-of-bound read in utf8_trunc

In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CWE ID-CWE-125
Out-of-bounds Read
CVE-2024-6442
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.14% / 34.19%
||
7 Day CHG~0.00%
Published-04 Oct, 2024 | 05:36
Updated-13 Nov, 2024 | 16:04
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bluetooth: ASCS Unchecked tailroom of the response buffer

In ascs_cp_rsp_add in /subsys/bluetooth/audio/ascs.c, an unchecked tailroom could lead to a global buffer overflow.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2024-5931
Matching Score-6
Assigner-Zephyr Project
ShareView Details
Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.12% / 29.95%
||
7 Day CHG~0.00%
Published-13 Sep, 2024 | 19:41
Updated-17 Sep, 2025 | 05:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BT: Unchecked user input in bap_broadcast_assistant

BT: Unchecked user input in bap_broadcast_assistant

Action-Not Available
Vendor-Zephyr Project
Product-zephyrZephyrzephyr
CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-1284
Improper Validation of Specified Quantity in Input
CWE ID-CWE-787
Out-of-bounds Write
CVE-2020-10021
Matching Score-6
Assigner-Zephyr Project
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Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.1||HIGH
EPSS-0.08% / 22.62%
||
7 Day CHG~0.00%
Published-11 May, 2020 | 22:26
Updated-17 Sep, 2024 | 00:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Out-of-bounds write in USB Mass Storage with unaligned sizes

Out-of-bounds Write in the USB Mass Storage memoryWrite handler with unaligned Sizes See NCC-ZEP-024, NCC-ZEP-025, NCC-ZEP-026 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-787
Out-of-bounds Write
CVE-2020-10019
Matching Score-6
Assigner-Zephyr Project
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Matching Score-6
Assigner-Zephyr Project
CVSS Score-8.1||HIGH
EPSS-0.22% / 44.47%
||
7 Day CHG~0.00%
Published-11 May, 2020 | 22:26
Updated-17 Sep, 2024 | 02:12
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Buffer Overflow in USB DFU requested length

USB DFU has a potential buffer overflow where the requested length (wLength) is not checked against the buffer size. This could be used by a malicious USB host to exploit the buffer overflow. See NCC-ZEP-002 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CVE-2020-13598
Matching Score-6
Assigner-Zephyr Project
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Matching Score-6
Assigner-Zephyr Project
CVSS Score-6.3||MEDIUM
EPSS-0.06% / 17.60%
||
7 Day CHG~0.00%
Published-24 May, 2021 | 21:40
Updated-17 Sep, 2024 | 03:28
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
FS: Buffer Overflow when enabling Long File Names in FAT_FS and calling fs_stat

FS: Buffer Overflow when enabling Long File Names in FAT_FS and calling fs_stat. Zephyr versions >= v1.14.2, >= v2.3.0 contain Stack-based Buffer Overflow (CWE-121). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7fhv-rgxr-x56h

Action-Not Available
Vendor-Zephyr Project
Product-zephyrzephyr
CWE ID-CWE-121
Stack-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
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