CVE-2026-8123 — Denial of Service

title: CVE-2026-8123 Open5GS NSSF Denial of Service
id: scw-2026-05-08-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-8123 by targeting the vulnerable function ogs_sbi_discovery_option_add_snssais within Open5GS NSSF component. This rule looks for specific URI patterns associated with the exploit, indicating a potential denial of service attack.
author: SCW Feed Engine (AI-generated)
date: 2026-05-08
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-8123/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/ogs_sbi_discovery_option_add_snssais'
      cs-method:
          - 'POST'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse