CVE-2026-45492 — Improper input validation in Microsoft Edge
CVE-2026-45492 — Improper input validation in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
What This Means For You
- If your environment is affected by CWE-20, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-45492 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 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-2026-45492 - Microsoft Edge Improper Input Validation Exploit Attempt
title: CVE-2026-45492 - Microsoft Edge Improper Input Validation Exploit Attempt
id: scw-2026-05-18-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit CVE-2026-45492 by looking for specific query parameters and URI paths known to be associated with the improper input validation vulnerability in Microsoft Edge. This rule aims to catch the initial exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-18
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-45492/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'malicious_input_pattern_for_CVE-2026-45492'
cs-uri|contains:
- '/specific/path/exploited/by/CVE-2026-45492'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-45492 | vulnerability | CVE-2026-45492 |
| CWE-20 | weakness | CWE-20 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 18, 2026 at 21:17 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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