Is CVE-2026-8251 actively exploited?

No active exploitation of CVE-2026-8251 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8251 be exploited remotely?

Yes. CVE-2026-8251 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8251?

CVE-2026-8251 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-8251

CWE-404Published: May 10, 2026· Updated: May 12, 2026

6.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.7th

Official Description

A vulnerability was found in Open5GS up to 2.7.7. This impacts the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. Performing a manipulation results in denial of service. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-8251 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.