CVE-2026-121163 Details
Description
Improper input validation in Browser in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: Medium)
A vulnerability in Google Chrome's Browser component, affecting versions prior to 157.0.8103.38, allows a remote attacker to execute arbitrary code outside the sandbox. This is achieved by compromising the renderer process and exploiting improper input validation. The vulnerability arises from the 'browser.disk_cache_dir' preference, which is appended to the network service's sandbox parameters without proper validation. As a result, a compromised network service can gain root-level access to the filesystem and execute code with user privileges.
Users can update to Google Chrome version 157.0.8103.38 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html | [email protected] | Release NotesVendor Advisory |
| https://issues.chromium.org/issues/556221528 | [email protected] | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| google chrome | < 157.0.8103.38 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | Initial Analysis | [email protected] |
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Nov 4, 2026 | CVE Modified | CISA-ADP |
| Nov 3, 2026 | New CVE Received | [email protected] |