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CVE-2025-10890 is a high-severity side-channel information leakage vulnerability in the V8 JavaScript engine used by Google Chrome before version 140.0.7339.207. Malicious web content can exploit the side channel to infer sensitive cross-origin information despite browser-origin isolation controls.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Chromium-based browser vulnerability addressed by Gentoo package upgrades.
A side-channel information disclosure vulnerability in the V8 component of Google Chrome that can allow a remote attacker to access sensitive information via a specially crafted web page.
A side-channel information leakage vulnerability in Chrome's V8 engine that could allow attackers to infer sensitive information.
Referenced as another recent high-severity vulnerability affecting Google Chrome's V8 engine, but no further details are provided in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.