What’s Vulnerable › Vulnerabilities

CVE-2026-82587: Open5GS AMF namf-handler.c amf_namf_comm_decode_ue_mm_context_list memory corruption

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-30 · updated 2026-08-31
• Weakness: CWE-119

Description

A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function amf_namf_comm_decode_ue_mm_context_list of the file src/amf/namf-handler.c of the component AMF. This manipulation of the argument ueContext.mmContextList[*].allowedNssai causes memory corruption. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2.8.0 is able to resolve this issue. Patch name: abf8a836564b966b5141110fc25ed413c4f17522. It is recommended to upgrade the affected component.

Affected products

• Open5GS: 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5 (+2)

References

• https://github.com/open5gs/open5gs/
• https://github.com/open5gs/open5gs/commit/abf8a836564b966b5141110fc25ed413c4f17522
• https://github.com/open5gs/open5gs/issues/4398
• https://github.com/open5gs/open5gs/releases/tag/v2.8.0
• https://vuldb.com/cve/CVE-2026-82587
• https://vuldb.com/submit/891890
• https://vuldb.com/vuln/397082
• https://vuldb.com/vuln/397082/cti

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