CVE-2026-8266

MEDIUM 4.3

Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_accept denial of service

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

12th

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.

CWE	CWE-404
Vendor	n/a
Product	open5gs
Published	May 11, 2026
Last Updated	May 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / Open5GS

2.7.0 2.7.1 2.7.2 2.7.3 2.7.4 2.7.5 2.7.6 2.7.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/362563 vuldb.com: https://vuldb.com/vuln/362563/cti vuldb.com: https://vuldb.com/submit/808483 github.com: https://github.com/open5gs/open5gs/issues/4447 github.com: https://github.com/open5gs/open5gs/

Credits

🔍 FrankLin (VulDB User) VulDB CNA Team