CVE-2025-9405

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

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.8% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/VI:N/VA:L/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

NVD analysis status

Analyzed. 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

2025-08-25 03:02Z1 YR AGO

Last updated

2025-08-31 08:08Z1 YR AGO

Reserved

2025-08-24

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:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-617Reachable AssertionBase

Data version

5.1

Document digest

2bc19d33ce3bd8aa49a5899ee1929ccc5c2009829abca67de51db8b0c28e0303

• vuldb.comVDB-321241 | Open5GS gmm-sm.c gmm_state_exception assertionhttps://vuldb.com/?id.321241vdb-entrytechnical-description
• vuldb.comVDB-321241 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/?ctiid.321241signaturepermissions-required
• vuldb.comSubmit #633467 | Open5GS <= v2.7.5 Denial of Servicehttps://vuldb.com/?submit.633467third-party-advisory
• github.comhttps://github.com/open5gs/open5gs/issues/3947issue-tracking
• github.comhttps://github.com/open5gs/open5gs/issues/3947#issuecomment-3029992728issue-tracking
• github.comhttps://github.com/user-attachments/files/21013084/amf_udm-uecm.zipexploit
• github.comhttps://github.com/open5gs/open5gs/commit/8e5fed16114f2f5e40bee1b161914b592b2b7b8fpatch
• github.comhttps://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-9405related