Is CVE-2026-8289 actively exploited?

No active exploitation of CVE-2026-8289 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8289 be exploited remotely?

Yes. CVE-2026-8289 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8289?

CVE-2026-8289 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-8289

CWE-404Published: May 11, 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 identified in Open5GS up to 2.7.7. This vulnerability affects the function smf_nsmf_handle_update_data_in_vsmf of the file /src/smf/nsmf-handler.c of the component SMF. The manipulation of the argument qosFlowProfile leads to denial of service. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-8289 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.