Unrated severityNVD Advisory· Published Mar 16, 2026· Updated Mar 16, 2026
Open5GS CCA smf_s6b_sta_cb denial of service
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
1Patches
Vulnerability mechanics
References
7- github.com/open5gs/open5gs/commit/80eb484a6ab32968e755e628b70d1a9c64f012ecmitrepatch
- github.com/open5gs/open5gs/releases/tag/v2.7.7mitrepatch
- github.com/open5gs/open5gs/issues/4343mitreexploitissue-tracking
- vuldb.commitrethird-party-advisory
- github.com/open5gs/open5gs/issues/4343mitreissue-tracking
- vuldb.commitresignaturepermissions-required
- vuldb.commitrevdb-entrytechnical-description
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