Is CVE-2026-8121 actively exploited?

No active exploitation of CVE-2026-8121 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8121 be exploited remotely?

Yes. CVE-2026-8121 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8121?

CVE-2026-8121 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-8121

CWE-404Published: May 8, 2026· Updated: May 11, 2026

6.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.8th

Official Description

A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-8121 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.