CVE-2026-82587: Memory Corruption in Open5GS
Description
CVE-2026-82587 is a medium severity memory corruption vulnerability in Open5GS versions 2.7.0 through 2.7.7. It affects the AMF component's function amf_namf_comm_decode_ue_mm_context_list, where manipulation of the ueContext.mmContextList[*].allowedNssai argument can cause memory corruption. The vulnerability can be exploited remotely without user interaction. A fix is available in Open5GS version 2.8.0.
CVSS v4.0
Score 5.3medium
Affected software
Open5GS
cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Open5GS up to version 2.7.7 involves improper handling of the ueContext.mmContextList[*].allowedNssai argument in the amf_namf_comm_decode_ue_mm_context_list function within the AMF component. This leads to memory corruption, which could be triggered remotely. The issue has been publicly disclosed, and an official patch is available in version 2.8.0, identified by patch abf8a836564b966b5141110fc25ed413c4f17522.
Potential Impact
Successful exploitation of this vulnerability could result in memory corruption on the affected system. This may lead to application instability or potential denial of service. The CVSS score of 5.3 indicates a medium impact with network attack vector, low attack complexity, no privileges required, and no user interaction needed. There is no indication of confidentiality, integrity, or availability impact beyond memory corruption.
Mitigation Recommendations
Upgrade Open5GS to version 2.8.0 or later, where this vulnerability has been fixed. No other mitigation or temporary workaround is indicated. Since this is not a cloud service, the user must apply the upgrade manually.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-30T06:09:37.015Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a94830facd9273b49ebabe8
Added to database: 08/30/2026, 19:22:55 UTC
Last enriched: 09/07/2026, 15:38:01 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 108
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