Chrome Windows Sandbox Escape via Mojo Bug <134.0.6998.177
CVE-2025-2783 Published on March 26, 2025

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)

Github Repository NVD

Known Exploited Vulnerability

This Google Chromium Mojo Sandbox Escape Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. 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.

The following remediation steps are recommended / required by April 17, 2025: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vulnerability Analysis

CVE-2025-2783 can be exploited with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Products Associated with CVE-2025-2783

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Google Chrome
 

Affected Versions

Google Chrome:

Vulnerable Packages

The following package name and versions may be associated with CVE-2025-2783

Package Manager Vulnerable Package Versions Fixed In
nuget CefSharp.Wpf < 134.3.90 134.3.90
nuget CefSharp.Wpf.HwndHost < 134.3.90 134.3.90
nuget CefSharp.Wpf.NetCore < 134.3.90 134.3.90
nuget CefSharp.WinForms < 134.3.90 134.3.90
nuget CefSharp.WinForms.NetCore < 134.3.90 134.3.90
nuget CefSharp.OffScreen.NetCore < 134.3.90 134.3.90
nuget CefSharp.OffScreen < 134.3.90 134.3.90

Exploit Probability

EPSS
40.86%
Percentile
97.31%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.