Home/CVE/A security flaw has been discovered in Open5GS up to 2.7.5. The impacted element is the function gmm_state_exception of
CVE

CVE-2025-9405

A security flaw has been discovered in Open5GS up to 2.7.5. The impacted element is the function gmm_state_exception of

A security flaw has been discovered in Open5GS up to 2.7.5. The impacted element is the function gmm_state_exception of the file src/amf/gmm-sm.c. The manipulation results in reachable assertion.

It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited. The patch is identified as 8e5fed16114f2f5e40bee1b161914b592b2b7b8f.

Applying a patch is advised to resolve this issue.

MEDIUM · CVSS 5.3 EPSS 0.00179
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

1
open5gs< 2.7.6
⚠

Public Exploits & PoCs

1
pocgithub.com · 3947github.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 Aug 2025 · 04:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-9405Third Party Advisory
https://github.com/open5gs/open5gs/commit/8e5fed16114f2f5e40bee1b161914b592b2b7b8fPatch
https://github.com/open5gs/open5gs/issues/3947#issuecomment-3029992728Issue Tracking
https://github.com/user-attachments/files/21013084/amf_udm-uecm.zipProduct
https://vuldb.com/?ctiid.321241Permissions RequiredVDB Entry
https://vuldb.com/?id.321241Third Party AdvisoryVDB Entry
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