EUVD-2026-17781Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Lifecycle Timeline
4DescriptionCVE.org
Use after free in CSS in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Remote code execution in Google Chrome's CSS engine prior to version 146.0.7680.178 allows unauthenticated remote attackers to execute arbitrary code within the Chrome sandbox via a crafted HTML page. The vulnerability stems from a use-after-free memory error in CSS processing, classified as high severity by the Chromium security team. Vendor-released patch available in Chrome 146.0.7680.178 and later.
Technical ContextAI
This vulnerability exploits a use-after-free (CWE-416) defect in Google Chrome's CSS rendering engine. Use-after-free flaws occur when a program references memory that has already been freed, allowing attackers to corrupt heap state or execute arbitrary code by supplying specially crafted CSS within an HTML document. The affected component processes CSS stylesheets during page rendering; a malformed stylesheet can trigger premature deallocation followed by subsequent memory access, leading to code execution. The sandbox boundary limits impact to the renderer process rather than system-wide compromise, though RCE within the sandbox remains a critical security issue. Chrome's multi-process architecture and Content Security Policy mechanisms are designed to mitigate such attacks, but this particular CSS parsing flaw bypasses those protections.
RemediationAI
The primary remediation is to update Google Chrome to version 146.0.7680.178 or later. Users should enable automatic updates in Chrome settings (Settings > About Chrome) to receive the patch automatically, or manually trigger an update by clicking the About menu. Organizations managing Chrome deployments should push this version through their patch management systems immediately given the high severity and ease of exploitation. No workarounds are available to mitigate the vulnerability without patching; users with older versions remain exposed to attack via malicious HTML pages. Verify successful patching by navigating to Settings > About Chrome and confirming the version is 146.0.7680.178 or higher.
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allVendor StatusVendor
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye (security), bullseye | vulnerable | 120.0.6099.224-1~deb11u1 | - |
| bookworm | vulnerable | 143.0.7499.169-1~deb12u1 | - |
| bookworm (security) | vulnerable | 146.0.7680.164-1~deb12u1 | - |
| trixie | vulnerable | 145.0.7632.159-1~deb13u1 | - |
| trixie (security) | vulnerable | 146.0.7680.164-1~deb13u1 | - |
| forky | vulnerable | 146.0.7680.153-1 | - |
| sid | fixed | 146.0.7680.177-1 | - |
| bullseye | fixed | (unfixed) | end-of-life |
| (unstable) | fixed | 146.0.7680.177-1 | - |
SUSE
Severity: MediumShare
External POC / Exploit Code
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