Which versions of Open5gs are affected by CVE-2025-15555?

CVE-2025-15555 affects Open5GS versions up to 2.7.6, a critical component in VoLTE infrastructure used by telecommunications providers.. A patch is available.

Is there a public PoC exploit available for CVE-2025-15555?

Yes, a public proof-of-concept exploit is available for CVE-2025-15555. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-15555?

Within 24 hours: Identify all systems running Open5GS 2.7.6 or earlier and assess network exposure. Within 7 days: Apply the available vendor patch to all affected Open5GS instances in a staged deployment approach, prioritizing production VoLTE Cx-Test environments. Within 30 days: Conduct post-patch validation, review access logs for indicators of compromise, and implement continuous monitoring for exploitation attempts.

Open5gs CVE-2025-15555

Q: What is the CVSS score of CVE-2025-15555?

CVE-2025-15555 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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. EPSS exploitation probability: 0.0%.

MEDIUM

Buffer Overflow (CWE-119)

2026-02-04 cna@vuldb.com

Buffer Overflow Open5gs

6.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.9 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

PoC Detected

Apr 07, 2026 - 16:16 vuln.today

Public exploit code

Patch released

Apr 07, 2026 - 16:16 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Feb 04, 2026 - 21:15 nvd

MEDIUM 6.9

DescriptionCVE.org

A security flaw has been discovered in Open5GS up to 2.7.6. Affected by this vulnerability is the function hss_ogs_diam_cx_mar_cb of the file src/hss/hss-cx-path.c of the component VoLTE Cx-Test. The manipulation of the argument OGS_KEY_LEN results in stack-based buffer overflow. The attack may be launched remotely. The patch is identified as 54dda041211098730221d0ae20a2f9f9173e7a21. A patch should be applied to remediate this issue.

AnalysisAI

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Open5Gs. A security flaw has been discovered in Open5GS up to 2.7.6. Affected by this vulnerability is the function hss_ogs_diam_cx_mar_cb of the file src/hss/hss-cx-path.c of the component VoLTE Cx-Test. The manipulation of the argument OGS_KEY_LEN results in stack-based buffer overflow. The attack may be launched remotely. The patch is identified as 54dda041211098730221d0ae20a2f9f9173e7a21. A patch should be applied to remediate this issue.

RemediationAI

A vendor patch is available — apply it immediately. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.