Open5GS up to 2.7.7 AMF src/amf/namf-handler.c amf_namf_comm_decode_ue_mm_context_list ueContext.mmContextList[*].allowedNssai memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.34

Summaryinfo

A vulnerability classified as problematic was found in Open5GS up to 2.7.7. This issue affects the function amf_namf_comm_decode_ue_mm_context_list of the file src/amf/namf-handler.c of the component AMF. Such manipulation of the argument ueContext.mmContextList[*].allowedNssai leads to memory corruption. This vulnerability is uniquely identified as CVE-2026-82587. The attack can be launched remotely. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Open5GS up to 2.7.7. Affected by this issue is the function amf_namf_comm_decode_ue_mm_context_list of the file src/amf/namf-handler.c of the component AMF. The manipulation of the argument ueContext.mmContextList[*].allowedNssai with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-82587. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 2.8.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch abf8a836564b966b5141110fc25ed413c4f17522 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-68289). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Open5GS 2.8.0
Patch: abf8a836564b966b5141110fc25ed413c4f17522

Timelineinfo

08/30/2026 Advisory disclosed
08/30/2026 +0 days VulDB entry created
08/31/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4398
Status: Confirmed

CVE: CVE-2026-82587 (🔒)
GCVE (CVE): GCVE-0-2026-82587
GCVE (VulDB): GCVE-100-397082
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/30/2026 08:15
Updated: 08/31/2026 00:26
Changes: 08/30/2026 08:15 (62), 08/31/2026 00:26 (1)
Complete: 🔍
Submitter: ZiyuLin
Cache ID: 216::103

Submitinfo

Accepted

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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