Buffer Overflow vulnerability in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the NAS 5GS decoder chain, triggered when… (CVE-2026-71676)
A buffer overflow vulnerability exists in Open5GS version 2.7.0 that can be triggered remotely via the NAS 5GS decoder chain. The flaw occurs when the message type byte of a NAS PDU is mutated, allowing an attacker to cause a denial of service condition.
AI Analysis
Technical Summary
Open5GS v2.7.0 contains a buffer overflow vulnerability (CWE-122) in the NAS 5GS decoder chain. This vulnerability is triggered when the message type byte of a NAS PDU is mutated, enabling a remote attacker to cause a denial of service. The CVSS 3.1 score is 7.5 (High), with attack vector network, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No patch or remediation information is currently provided, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation results in a denial of service condition, impacting the availability of the Open5GS service. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for updates from the Open5GS project and apply any official patches once released.
Buffer Overflow vulnerability in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the NAS 5GS decoder chain, triggered when… (CVE-2026-71676)
Description
A buffer overflow vulnerability exists in Open5GS version 2.7.0 that can be triggered remotely via the NAS 5GS decoder chain. The flaw occurs when the message type byte of a NAS PDU is mutated, allowing an attacker to cause a denial of service condition.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Open5GS v2.7.0 contains a buffer overflow vulnerability (CWE-122) in the NAS 5GS decoder chain. This vulnerability is triggered when the message type byte of a NAS PDU is mutated, enabling a remote attacker to cause a denial of service. The CVSS 3.1 score is 7.5 (High), with attack vector network, low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial of service). No patch or remediation information is currently provided, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation results in a denial of service condition, impacting the availability of the Open5GS service. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for updates from the Open5GS project and apply any official patches once released.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-g8r5-63w3-725c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-71676"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a85ee2bacd9273b4969a9da
Added to database: 08/19/2026, 17:55:55 UTC
Last enriched: 08/19/2026, 18:08:07 UTC
Last updated: 08/19/2026, 20:52:00 UTC
Views: 2
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