CVE-2026-8249

MEDIUM

Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service

Title source: cna
STIX 2.1

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.

References (5)

Core 5
Core References
Third Party Advisory third-party-advisory
Submit #808473 | Open5gs SMF v2.7.7 Denial of Service
https://vuldb.com/submit/808473
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4443
Vdb Entry, Technical Description vdb-entry technical-description
VDB-362546 | Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service
https://vuldb.com/vuln/362546
Signature, Permissions Required signature permissions-required
VDB-362546 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/362546/cti

Scores

CVSS v3 4.3
EPSS 0.0037
EPSS Percentile 28.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-404
Status published
Products (9)
None/Open5GS 2.7.0
None/Open5GS 2.7.1
None/Open5GS 2.7.2
None/Open5GS 2.7.3
None/Open5GS 2.7.4
None/Open5GS 2.7.5
None/Open5GS 2.7.6
None/Open5GS 2.7.7
open5gs/open5gs < 2.7.7
Published May 10, 2026
Tracked Since May 11, 2026