CVE-2026-8289 — Open5GS Denial of Service
CVE-2026-8289 — A vulnerability was identified in Open5GS up to 2.7.7. This vulnerability affects the function smf_nsmf_handle_update_data_in_vsmf of the file /src/smf/nsmf-handler.c of the component SMF. The manipulation of the argument qosFlowProfile leads to denial of service. Remote exploitation
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-2026-8289 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-2026-8289 - Open5GS SMF Denial of Service via qosFlowProfile
title: CVE-2026-8289 - Open5GS SMF Denial of Service via qosFlowProfile
id: scw-2026-05-11-ai-1
status: experimental
level: high
description: |
This rule detects potential exploitation attempts against Open5GS CVE-2026-8289. The vulnerability lies in the smf_nsmf_handle_update_data_in_vsmf function where manipulation of the 'qosFlowProfile' argument can lead to a denial of service. This rule specifically looks for HTTP POST requests containing the 'qosFlowProfile' parameter in the query string, which is indicative of an attempt to exploit this vulnerability.
author: SCW Feed Engine (AI-generated)
date: 2026-05-11
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-8289/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'qosFlowProfile='
cs-method:
- 'POST'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-8289 | vulnerability | CVE-2026-8289 |
| CWE-404 | weakness | CWE-404 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 11, 2026 at 17:16 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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