CVE-2026-42002 — Concurrency and locking defects in

title: CVE-2026-42002 GSS-TSIG Concurrency Exploit Attempt
id: scw-2026-05-21-ai-1
status: experimental
level: critical
description: |
  This rule detects attempts to exploit CVE-2026-42002 by targeting the GSS-TSIG service with a specific URI path and query parameter indicative of a concurrency/locking defect exploit.
author: SCW Feed Engine (AI-generated)
date: 2026-05-21
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-42002/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/gss-tsig/exploit'
      cs-uri-query|contains:
          - 'race_condition=true'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse