CVE-2026-8745 - Open5GS AUSF nausf-handler.c ogs_timer_add denial of service

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MEDIUM

Open5GS AUSF nausf-handler.c ogs_timer_add denial of service

Published May 17, 2026

5.3

MEDIUM

CVSS 4.0

EPSS 0.68%

Description

A vulnerability was identified in Open5GS up to 2.7.7. Affected by this vulnerability is the function ogs_timer_add in the library /src/ausf/nausf-handler.c of the component AUSF. The manipulation leads to denial of service. The attack can be initiated remotely. The exploit is publicly available and might 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 (5)

https://github.com/open5gs/open5gs/
product
https://github.com/open5gs/open5gs/issues/4472
exploitissue-trackingIssue Tracking
https://vuldb.com/submit/817031
third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/364332
vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/364332/cti
signaturepermissions-requiredPermissions RequiredVDB Entry

Link	Providers	Tags
https://github.com/open5gs/open5gs/		product
https://github.com/open5gs/open5gs/issues/4472		exploitissue-trackingIssue Tracking
https://vuldb.com/submit/817031		third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/364332		vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/364332/cti		signaturepermissions-requiredPermissions RequiredVDB Entry