CVE-2025-6558 Google Chromium: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Aug 12, 2025
What to do
- Install Google's security update for Chromium. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
- Keep extensions to a minimum and remove ones you do not recognise.
- Stop using Internet Explorer and any browser that no longer gets updates.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: A malicious or hacked website can be enough. Browser bugs are often the first step in a longer attack on the whole computer or phone.
The details
- Official name
- Google Chromium ANGLE and GPU Improper Input Validation Vulnerability
- Product
- Google Chromium
- CISA description
- Google Chromium contains an improper input validation vulnerability in ANGLE and GPU. This vulnerability could allow a remote attacker to potentially perform a sandbox escape via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
- Type of flaw
- Software flaw (CWE-20)
- Confirmed exploited
- Jul 22, 2025
- US federal patch deadline
- Aug 12, 2025
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Answering about CVE-2025-6558 ·
Questions about CVE-2025-6558
Is CVE-2025-6558 being exploited?
Yes. CISA added CVE-2025-6558 to its Known Exploited Vulnerabilities catalog on Jul 22, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-6558?
Install Google's security update for Chromium. If no update exists, follow the vendor's workaround or stop using the product until one ships. Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
Am I affected by CVE-2025-6558?
Only if you use Google Chromium. This one is aimed at devices or apps of the kind people own.