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CVE-2026-4240 Details

Description

A vulnerability was determined in Open5GS up to 2.7.6. The affected element is the function smf_gx_cca_cb/smf_gy_cca_cb/smf_s6b_aaa_cb/smf_s6b_sta_cb of the component CCA Handler. This manipulation causes denial of service. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2.7.7 is sufficient to fix this issue. Patch name: 80eb484a6ab32968e755e628b70d1a9c64f012ec. Upgrading the affected component is recommended.

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References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/open5gs/open5gs/ [email protected]Product
https://github.com/open5gs/open5gs/commit/80eb484a6ab32968e755e628b70d1a9c64f012ec [email protected]Patch
https://github.com/open5gs/open5gs/issues/4343 [email protected]Issue TrackingThird Party Advisory
https://github.com/open5gs/open5gs/issues/4343#issue-4021871895 [email protected]ExploitIssue TrackingThird Party Advisory
https://github.com/open5gs/open5gs/releases/tag/v2.7.7 [email protected]Release Notes

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-404Improper Resource Shutdown or Release[email protected]

Affected Products

ProductVersions
open5gs open5gs
< 2.7.7

CPE

  • cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-4240
NVD Published Date:
Mar 16, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-4240 Details - Not Deferred