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Vulnerability Details :

CVE-2025-27840

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-08 Mar, 2025 | 00:00
Updated At-12 May, 2025 | 15:33
Rejected At-
Credits

Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).

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)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:08 Mar, 2025 | 00:00
Updated At:12 May, 2025 | 15:33
Rejected At:
▼CVE Numbering Authority (CNA)

Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).

Affected Products
Vendor
Espressif
Product
ESP32
Default Status
unknown
Versions
Affected
  • 2025-03-06 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-912CWE-912 Hidden Functionality
Type: CWE
CWE ID: CWE-912
Description: CWE-912 Hidden Functionality
Metrics
VersionBase scoreBase severityVector
3.16.8MEDIUM
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf
N/A
https://x.com/pascal_gujer/status/1898442439704158276
N/A
https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/
N/A
https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/
N/A
https://reg.rootedcon.com/cfp/schedule/talk/5
N/A
https://flyingpenguin.com/?p=67838
N/A
https://github.com/em0gi/CVE-2025-27840
N/A
https://github.com/orgs/espruino/discussions/7699
N/A
https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/
N/A
https://darkmentor.com/blog/esp32_non-backdoor/
N/A
https://news.ycombinator.com/item?id=43308740
N/A
https://news.ycombinator.com/item?id=43301369
N/A
https://github.com/esphome/esphome/discussions/8382
N/A
https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html
N/A
https://www.espressif.com/en/news/Response_ESP32_Bluetooth
N/A
Hyperlink: https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf
Resource: N/A
Hyperlink: https://x.com/pascal_gujer/status/1898442439704158276
Resource: N/A
Hyperlink: https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/
Resource: N/A
Hyperlink: https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/
Resource: N/A
Hyperlink: https://reg.rootedcon.com/cfp/schedule/talk/5
Resource: N/A
Hyperlink: https://flyingpenguin.com/?p=67838
Resource: N/A
Hyperlink: https://github.com/em0gi/CVE-2025-27840
Resource: N/A
Hyperlink: https://github.com/orgs/espruino/discussions/7699
Resource: N/A
Hyperlink: https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/
Resource: N/A
Hyperlink: https://darkmentor.com/blog/esp32_non-backdoor/
Resource: N/A
Hyperlink: https://news.ycombinator.com/item?id=43308740
Resource: N/A
Hyperlink: https://news.ycombinator.com/item?id=43301369
Resource: N/A
Hyperlink: https://github.com/esphome/esphome/discussions/8382
Resource: N/A
Hyperlink: https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html
Resource: N/A
Hyperlink: https://www.espressif.com/en/news/Response_ESP32_Bluetooth
Resource: N/A
▼Authorized Data Publishers (ADP)
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
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:08 Mar, 2025 | 20:15
Updated At:12 Mar, 2025 | 14:58

Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).

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
Secondary3.16.8MEDIUM
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
Primary3.16.8MEDIUM
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
Type: Primary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CPE Matches
espressif
espressif
>>esp32_firmware>>-
cpe:2.3:o:espressif:esp32_firmware:-:*:*:*:*:*:*:*
espressif
espressif
>>esp32>>-
cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-912Secondarycve@mitre.org
NVD-CWE-OtherPrimarynvd@nist.gov
CWE ID: CWE-912
Type: Secondary
Source: cve@mitre.org
CWE ID: NVD-CWE-Other
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.htmlcve@mitre.org
Third Party Advisory
Technical Description
https://darkmentor.com/blog/esp32_non-backdoor/cve@mitre.org
Exploit
Third Party Advisory
Technical Description
https://flyingpenguin.com/?p=67838cve@mitre.org
Third Party Advisory
Technical Description
https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdfcve@mitre.org
Third Party Advisory
https://github.com/em0gi/CVE-2025-27840cve@mitre.org
Product
https://github.com/esphome/esphome/discussions/8382cve@mitre.org
Issue Tracking
https://github.com/orgs/espruino/discussions/7699cve@mitre.org
Issue Tracking
https://news.ycombinator.com/item?id=43301369cve@mitre.org
Issue Tracking
https://news.ycombinator.com/item?id=43308740cve@mitre.org
Issue Tracking
https://reg.rootedcon.com/cfp/schedule/talk/5cve@mitre.org
Third Party Advisory
https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/cve@mitre.org
Exploit
Press/Media Coverage
https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/cve@mitre.org
Exploit
Press/Media Coverage
https://www.espressif.com/en/news/Response_ESP32_Bluetoothcve@mitre.org
Press/Media Coverage
https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/cve@mitre.org
Third Party Advisory
https://x.com/pascal_gujer/status/1898442439704158276cve@mitre.org
Third Party Advisory
Hyperlink: https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html
Source: cve@mitre.org
Resource:
Third Party Advisory
Technical Description
Hyperlink: https://darkmentor.com/blog/esp32_non-backdoor/
Source: cve@mitre.org
Resource:
Exploit
Third Party Advisory
Technical Description
Hyperlink: https://flyingpenguin.com/?p=67838
Source: cve@mitre.org
Resource:
Third Party Advisory
Technical Description
Hyperlink: https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf
Source: cve@mitre.org
Resource:
Third Party Advisory
Hyperlink: https://github.com/em0gi/CVE-2025-27840
Source: cve@mitre.org
Resource:
Product
Hyperlink: https://github.com/esphome/esphome/discussions/8382
Source: cve@mitre.org
Resource:
Issue Tracking
Hyperlink: https://github.com/orgs/espruino/discussions/7699
Source: cve@mitre.org
Resource:
Issue Tracking
Hyperlink: https://news.ycombinator.com/item?id=43301369
Source: cve@mitre.org
Resource:
Issue Tracking
Hyperlink: https://news.ycombinator.com/item?id=43308740
Source: cve@mitre.org
Resource:
Issue Tracking
Hyperlink: https://reg.rootedcon.com/cfp/schedule/talk/5
Source: cve@mitre.org
Resource:
Third Party Advisory
Hyperlink: https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/
Source: cve@mitre.org
Resource:
Exploit
Press/Media Coverage
Hyperlink: https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/
Source: cve@mitre.org
Resource:
Exploit
Press/Media Coverage
Hyperlink: https://www.espressif.com/en/news/Response_ESP32_Bluetooth
Source: cve@mitre.org
Resource:
Press/Media Coverage
Hyperlink: https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/
Source: cve@mitre.org
Resource:
Third Party Advisory
Hyperlink: https://x.com/pascal_gujer/status/1898442439704158276
Source: cve@mitre.org
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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