CVEs / CVE-2025-2783

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

Known exploited in the CISA KEV catalog since 27 Mar 2025
high 8.3 CVSS 3.1 (from the CNA)
EPSS 9.23% chance of exploitation in the next 30 days, higher than 95% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Google Chromium Mojo on Windows contains a sandbox escape vulnerability caused by a logic error, which results from an incorrect handle being provided in unspecified circumstances. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
CISA, Known Exploited Vulnerabilities catalog

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)
The CVE record, via NVD · published 26 Mar 2025 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Google Chrome	from 134.0.6998.177, before 134.0.6998.177	134.0.6998.177

Exploitation

In CISA KEV since	27 Mar 2025
Due date for US federal agencies	17 Apr 2025
Used in ransomware campaigns	Unknown
Required action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity

CVSS 3.1	8.3 high `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H` Scored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0)

References

CVE-2025-2783 on NVD
CVE-2025-2783 in the CISA KEV catalog
https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html (cited by CISA)
https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html Release Notes
https://issues.chromium.org/issues/405143032 Permissions Required
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-2783 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.