CVE-2026-41999 — Incorrect Behaviour of Views with TCP PROXY
CVE-2026-41999 — Incorrect Behaviour of Views with TCP PROXY Requests
What This Means For You
- If your environment is affected by this vulnerability type, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41999 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.
Suspicious TCP PROXY Behavior Indicative of CVE-2026-41999 Exploitation
title: Suspicious TCP PROXY Behavior Indicative of CVE-2026-41999 Exploitation
id: scw-2026-05-21-ai-1
status: experimental
level: high
description: |
This rule detects the use of 'PROXY' within the URI query string, which is a key indicator of the incorrect behavior of views with TCP PROXY requests as described in CVE-2026-41999. Exploitation often involves manipulating these proxy requests to achieve unintended outcomes.
author: SCW Feed Engine (AI-generated)
date: 2026-05-21
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-41999/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: proxy
detection:
selection:
cs-uri-query|contains:
- 'PROXY'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41999 | vulnerability | CVE-2026-41999 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 21, 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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