Is CVE-2026-8291 in the CISA KEV catalog?

No. CVE-2026-8291 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-8291?

CVE-2026-8291 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-8291?

CVE-2026-8291 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-8291?

No published fix for CVE-2026-8291 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-8291

MEDIUM

4.3

CVSS v3

NVD

Description

A weakness has been identified in Open5GS up to 2.7.7. Impacted is the function ogs_nnrf_nfm_handle_nf_profile of the file lib/sbi/nnrf-handler.c of the component NRF. This manipulation causes denial of service. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.

CWE-404

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory2

VDB Entry1

vuldb.com

Product1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-14.