CVE-2026-8745 — Open5GS Denial of Service
CVE-2026-8745 — 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 public
What This Means For You
- If your environment is affected by CWE-404, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-8745 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-8745 - Open5GS AUSF Handler DoS Attempt
title: CVE-2026-8745 - Open5GS AUSF Handler DoS Attempt
id: scw-2026-05-17-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit CVE-2026-8745 in Open5GS. The vulnerability lies in the ogs_timer_add function within the nausf-handler.c file of the AUSF component. This rule specifically looks for requests targeting the nausf-handler URI and containing 'ogs_timer_add' in the query string, indicating a potential exploit attempt leading to a denial of service.
author: SCW Feed Engine (AI-generated)
date: 2026-05-17
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-8745/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/nausf-handler'
cs-uri-query|contains:
- 'ogs_timer_add'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-8745 | vulnerability | CVE-2026-8745 |
| CWE-404 | weakness | CWE-404 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 17, 2026 at 13:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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