CVE-2026-82587

Open5GS AMF namf-handler.c amf_namf_comm_decode_ue_mm_context_list memory corruption

MEDIUM
4.3
CVSS Score
Published: August 30, 2026 at 07:00 PM UTC
Updated: August 31, 2026 at 09:06 PM UTC
1 product affected across 1 vendorOpen5GS

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 2.8.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (8)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/397082
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/397082/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-82587
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/891890
ExploitIssue Tracking
Source: cverecord
https://github.com/open5gs/open5gs/issues/4398
Product
Source: cverecord
https://github.com/open5gs/open5gs/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-119

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