CVE-2026-8266
A vulnerability was detected in Open5GS up to 2.7.7.
Does this matter?
Lower severity and a low EPSS score (0.46%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability was detected in Open5GS up to 2.7.7. This affects the function gsm_build_pdu_session_establishment_accept of the file /src/smf/gsm-build.c of the component SMF. The manipulation results in denial of service. The attack can be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
- CVSS 4.0
- 2.1 LOWCVSS:4.0/AV:N/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/M
- EPSS
- 0.46% probability · 40th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-404
- Affected
- open5gs/open5gs
- Source
- cna@vuldb.com
EPSS 0.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/open5gs/open5gs/Product
- https://github.com/open5gs/open5gs/issues/4447Exploit, Issue Tracking
- https://vuldb.com/submit/808483Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/362563Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/362563/ctiPermissions Required, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.