EUVD-2026-42632
GHSA-7vwm-q9fw-cfjw
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local-only UAF requiring low-privilege credentials; A:L added independently because use-after-free in context cleanup commonly causes process crashes, consistent with the DoS tag despite VA:N in the provided vector.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
A security flaw has been discovered in Open5GS 2.7.7. This affects the function amf_context_final of the file src/amf/context.c of the component AMF. Performing a manipulation results in use after free. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks.
AnalysisAI
Use-after-free in Open5GS 2.7.7's AMF component allows a local low-privileged user to access freed memory within the amf_context_final function in src/amf/context.c, producing a low-severity confidentiality exposure. Exploitation is strictly local - no network vector exists - and a public proof-of-concept is confirmed by the CVSS 4.0 E:P supplemental modifier. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access to the host operating system running Open5GS 2.7.7 with at least low-privilege OS credentials - remote or unauthenticated exploitation is not possible per the CVSS 4.0 AV:L/PR:L metrics. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A local low-privileged user on a host running Open5GS 2.7.7 executes the available proof-of-concept tool, triggering the AMF context finalization routine in a way that causes `amf_context_final` to dereference a previously freed pointer. The attacker reads residual heap data from the AMF process memory, potentially exposing in-memory AMF context state. … |
| Remediation | Consult the vendor security advisory at https://github.com/open5gs/open5gs/security/advisories/GHSA-88pq-hpwv-2vjw to identify the specific patched release version - no exact fix version was confirmed in the available intelligence data, so the upgrade target must be validated there before deployment. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-119 – Buffer Overflow
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today