Medium severity5.3NVD Advisory· Published Mar 16, 2026· Updated Jun 17, 2026
CVE-2026-4240
CVE-2026-4240
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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Affected products
2Patches
Vulnerability mechanics
References
7- github.com/open5gs/open5gs/commit/80eb484a6ab32968e755e628b70d1a9c64f012ecnvdPatch
- github.com/open5gs/open5gs/issues/4343nvdExploitIssue TrackingThird Party Advisory
- vuldb.comnvdExploitThird Party AdvisoryVDB Entry
- github.com/open5gs/open5gs/issues/4343nvdIssue TrackingThird Party Advisory
- vuldb.comnvdThird Party AdvisoryVDB Entry
- github.com/open5gs/open5gs/releases/tag/v2.7.7nvdRelease Notes
- vuldb.comnvdPermissions RequiredVDB Entry
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