Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
CVE Vulnerability Details :
CVE-2026-1976
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-06 Feb, 2026 | 03:02
Updated At-23 Feb, 2026 | 09:20
Rejected At-
▼CVE Numbering Authority (CNA)
Free5GC SMF SessionDeletionResponse null pointer dereference

A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.

Affected Products
Vendor
n/a
Product
Free5GC
CPEs
  • cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*
Modules
  • SMF
Versions
Affected
  • 4.0
  • 4.1.0
Problem Types
TypeCWE IDDescription
CWECWE-476NULL Pointer Dereference
CWECWE-404Denial of Service
Type: CWE
CWE ID: CWE-476
Description: NULL Pointer Dereference
Type: CWE
CWE ID: CWE-404
Description: Denial of Service
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.05.3MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
2.05.0N/A
AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Version: 3.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Version: 2.0
Base score: 5.0
Base severity: N/A
Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
LinZiyu (VulDB User)
Timeline
EventDate
Advisory disclosed2026-02-05 00:00:00
VulDB entry created2026-02-05 01:00:00
VulDB entry last update2026-02-09 17:03:04
Event: Advisory disclosed
Date: 2026-02-05 00:00:00
Event: VulDB entry created
Date: 2026-02-05 01:00:00
Event: VulDB entry last update
Date: 2026-02-09 17:03:04
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/?id.344498
vdb-entry
technical-description
https://vuldb.com/?ctiid.344498
signature
permissions-required
https://vuldb.com/?submit.743239
third-party-advisory
https://github.com/free5gc/free5gc/issues/817
issue-tracking
https://github.com/free5gc/free5gc/issues/817#issue-3832188092
exploit
issue-tracking
https://github.com/free5gc/smf/pull/189
issue-tracking
patch
https://github.com/free5gc/free5gc/
product
Hyperlink: https://vuldb.com/?id.344498
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/?ctiid.344498
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/?submit.743239
Resource:
third-party-advisory
Hyperlink: https://github.com/free5gc/free5gc/issues/817
Resource:
issue-tracking
Hyperlink: https://github.com/free5gc/free5gc/issues/817#issue-3832188092
Resource:
exploit
issue-tracking
Hyperlink: https://github.com/free5gc/smf/pull/189
Resource:
issue-tracking
patch
Hyperlink: https://github.com/free5gc/free5gc/
Resource:
product
▼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
Details not found