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

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MEDIUM

Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service

Published May 10, 2026

5.3

MEDIUM

CVSS 4.0

EPSS 0.68%

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

Vendor Open5gs Product Open5GS Default
n/a
- Version
  2.7.0
  Status
  affected
  Constraints
  -
- Version
  2.7.1
  Status
  affected
  Constraints
  -
- Version
  2.7.2
  Status
  affected
  Constraints
  -
- Version
  2.7.3
  Status
  affected
  Constraints
  -
- Version
  2.7.4
  Status
  affected
  Constraints
  -
- Version
  2.7.5
  Status
  affected
  Constraints
  -
- Version
  2.7.6
  Status
  affected
  Constraints
  -
- Version
  2.7.7
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Open5gs

Open5GS

n/a

Version	Status	Constraints
2.7.0	affected	-
2.7.1	affected	-
2.7.2	affected	-
2.7.3	affected	-
2.7.4	affected	-
2.7.5	affected	-
2.7.6	affected	-
2.7.7	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-404

Improper Resource Shutdown or Release

References (6)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29003
Advisory
https://github.com/open5gs/open5gs/
product
https://github.com/open5gs/open5gs/issues/4443
exploitissue-trackingIssue Tracking
https://vuldb.com/submit/808473
exploitthird-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/362546
vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/362546/cti
signaturepermissions-requiredPermissions RequiredVDB Entry

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29003		Advisory
https://github.com/open5gs/open5gs/		product
https://github.com/open5gs/open5gs/issues/4443		exploitissue-trackingIssue Tracking
https://vuldb.com/submit/808473		exploitthird-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/362546		vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/362546/cti		signaturepermissions-requiredPermissions RequiredVDB Entry