CVE-2026-8222

Name: CVE-2026-8222
Creator: NVD / NIST
Published: 2026-05-10T03:16:08.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2026-8222 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function pcf_nbsf_management_handle_register of the file src/pcf/nbsf-handler.c of the component sm-policies Endpoint. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function pcf_nbsf_management_handle_register of the file src/pcf/nbsf-handler.c of the component sm-policies Endpoint. Such manipulation leads to denial of service. The attack may be performed from remote. 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.

Metrics

CVSS 3.1

7.5/10

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

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.48%

37.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-404

Affected Software

Vendor	Product	Versions
Open5gs	Open5gs	<= 2.7.7

References

https://github.com/open5gs/open5gs/Product
https://github.com/open5gs/open5gs/issues/4437Exploit, Issue Tracking
https://vuldb.com/submit/808427Third Party Advisory, VDB Entry
https://vuldb.com/vuln/362439Third Party Advisory, VDB Entry
https://vuldb.com/vuln/362439/ctiPermissions Required, VDB Entry

Timeline

Published: May 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8222?

How severe is CVE-2026-8222?

CVE-2026-8222 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8222?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8222?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST