CVE-2026-8248

MEDIUM

Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service

Title source: cna
STIX 2.1

Description

A vulnerability was detected in Open5GS up to 2.7.7. The affected element is the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. The manipulation results in denial of service. The attack may be launched remotely. The exploit is now public 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
Vdb Entry, Technical Description vdb-entry technical-description
VDB-362545 | Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service
https://vuldb.com/vuln/362545
Signature, Permissions Required signature permissions-required
VDB-362545 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/362545/cti
Third Party Advisory third-party-advisory
Submit #808472 | Open5gs SMF v2.7.7 Denial of Service
https://vuldb.com/submit/808472
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4442

Scores

CVSS v3 4.3
EPSS 0.0047
EPSS Percentile 36.9%
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