Cyber Resilience

CVE-2024-40129

CriticalPublic PoC

Published: 16 July 2024

Published
16 July 2024
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0055 68.3th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-40129 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Open5Gs Open5Gs. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked in the top 31.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Open5GS v2.6.4 is vulnerable to Buffer Overflow. via /lib/pfcp/context.c.

CWE(s)
CWE-787CWE-122

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

The heap buffer overflow in Open5GS PFCP context initialization (/lib/pfcp/context.c) during SMF startup causes a detectable crash (confirmed by ASAN), enabling endpoint denial of service via application exploitation.

Affected Assets

open5gs
open5gs
2.6.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References