CVE-2025-2783: Google Chromium Mojo Sandbox Escape Vulnerability

Severity: high (CVSS 8.3 v3.1)
Exploited in the wild: yes — in CISA KEV since 2025-03-27
EPSS: 9.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-03-26 · updated 2026-06-17

Description

Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file. (Chromium security severity: High)

Affected products

Google Chrome: before 134.0.6998.177 — fixed in 134.0.6998.177

How to fix

Upgrade to a fixed version: Google Chrome 134.0.6998.177. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html
https://issues.chromium.org/issues/405143032
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-2783

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