CVE-2026-8249: Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-10 · updated 2026-07-24
Weakness: CWE-404

Description

A flaw has been found in Open5GS up to 2.7.7. The impacted element is the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. This manipulation causes denial of service. Remote exploitation of the attack is possible. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Open5GS: through 2.7.7

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4443
https://vuldb.com/submit/808473
https://vuldb.com/vuln/362546
https://vuldb.com/vuln/362546/cti
https://vuldb.com/submit/808473

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