Open5GS AMF Service nsmf-handler.c amf_nsmf_pdusession_handle_release_sm_context assertion

published 2025-08-07 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-23959

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

A vulnerability was found in Open5GS up to 2.7.5. It has been classified as problematic. Affected is the function amf_nsmf_pdusession_handle_release_sm_context of the file src/amf/nsmf-handler.c of the component AMF Service. The manipulation leads to reachable assertion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The name of the patch is 66bc558e417e70ae216ec155e4e81c14ae0ecf30. It is recommended to apply a patch to fix this issue.

Patch / fix

links 1

github.com/open5gs/open5gs@66bc558 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 15 mo ago (2025-08-08)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/user-attachments/files/21356631/amf_nsmf_pdusession_handle_release_sm_context.zip referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/open5gs/open5gs/issues/4012 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA	3.0	3.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA	2.0	1.7	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
CNA	4.0	1.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CNA	2.0	1.7	AV:L/AC:L/Au:S/C:N/I:N/A:P

Affected products

n/a Open5GS

Classification

Weakness

CWE-617 Reachable Assertion

References

github.com /open5gs/open5gs/commit/66bc558e417e70ae216ec155e4e81c14ae0ecf30
patch, product
github.com /user-attachments/files/21356631/amf_nsmf_pdusession_handle_release_sm_context.zip
exploit, not-applicable
github.com /open5gs/open5gs/issues/4012
issue-tracking, exploit, third-party-advisory
vuldb.com /?id.319128
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.319128
signature, permissions-required, vdb-entry
vuldb.com /?submit.621282
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-8698
NVD CVE-2025-8698

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary