CVE-2026-8251

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 found in Open5GS up to 2.7.7. This impacts the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. Performing a manipulation results in denial of service. The attack is possible to be carried out remotely. The exploit has been made public and could 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-362548 | Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service
https://vuldb.com/vuln/362548
Signature, Permissions Required signature permissions-required
VDB-362548 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/362548/cti
Third Party Advisory third-party-advisory
Submit #808480 | Open5gs SMF v2.7.7 Denial of Service
https://vuldb.com/submit/808480
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4445

Scores

CVSS v3 4.3
EPSS 0.0046
EPSS Percentile 36.3%
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