- 6.9MediumCVSS base score
- 0.66%Exploitation in 30 daysEPSS · top 48% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. 4 references of the record are tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits4
References tagged exploit4 references
- Submit #633467 | Open5GS <= v2.7.5 Denial of Service (opens in a new tab)third-party-advisoryexploit
- https://github.com/open5gs/open5gs/issues/3947 (opens in a new tab)issue-trackingexploit
- https://github.com/open5gs/open5gs/issues/3947#issuecomment-3029992728 (opens in a new tab)issue-trackingexploit
- https://github.com/user-attachments/files/21013084/amf_udm-uecm.zip (opens in a new tab)exploit
Timeline
ID reserved
By VulDB
- 1 day later
· 1 day later
Published
- 6 days later
· 6 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium6.9 | 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 |
| VulDBCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| VulDBCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| VulDBCNA (assigner) | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C |
| NVDNVD · Analyzed | 4.0 | Medium5.5 | 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 |
- EPSS (exploitation in 30 days)
- 0.66% · top 48% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.
Affected products
Open5GS
- affected 2.7.0
- affected 2.7.1
- affected 2.7.2
- affected 2.7.3
- affected 2.7.4
- affected 2.7.5
References
References8
- VDB-321241 | Open5GS gmm-sm.c gmm_state_exception assertion (opens in a new tab)vdb-entrytechnical-description
- VDB-321241 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- Submit #633467 | Open5GS <= v2.7.5 Denial of Service (opens in a new tab)third-party-advisoryexploit
- https://github.com/open5gs/open5gs/issues/3947 (opens in a new tab)issue-trackingexploit
- https://github.com/open5gs/open5gs/issues/3947#issuecomment-3029992728 (opens in a new tab)issue-trackingexploit
- https://github.com/user-attachments/files/21013084/amf_udm-uecm.zip (opens in a new tab)exploit
- https://github.com/open5gs/open5gs/commit/8e5fed16114f2f5e40bee1b161914b592b2b7b8f (opens in a new tab)patch
- https://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-9405 (opens in a new tab)related
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-25719 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-9405)Record last updated .