CVE-2025-15555

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.3% of scored records. A rank, not a probability.

NVD base score

6.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD 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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-02-04 20:32Z7 MO AGO

Last updated

2026-04-07 15:49Z5 MO AGO

Reserved

2026-02-02

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA 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

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-121Stack-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

5bc9a049ac5de52d7fac6dc01af5bd09130095ed2d5eaee69407c8c0b1218b42

• vuldb.comVDB-343795 | Open5GS VoLTE Cx-Test hss-cx-path.c hss_ogs_diam_cx_mar_cb stack-based overflowhttps://vuldb.com/vuln/343795vdb-entrytechnical-description
• vuldb.comVDB-343795 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/343795/ctisignaturepermissions-required
• vuldb.comSubmit #741901 | Open5GS v2.7.6 Buffer Over-readhttps://vuldb.com/submit/741901third-party-advisory
• github.comhttps://github.com/open5gs/open5gs/issues/4177issue-tracking
• github.comhttps://github.com/open5gs/open5gs/issues/4177#event-21256395700issue-tracking
• github.comhttps://github.com/open5gs/open5gs/commit/54dda041211098730221d0ae20a2f9f9173e7a21patch
• github.comhttps://github.com/open5gs/open5gs/product