CVE-2025-9132 is a high-severity memory-safety vulnerability in the V8 JavaScript engine used by Google Chrome. The issue is described as an out-of-bounds write affecting Chrome versions prior to 139.0.7258.138. According to the provided content, a remote attacker could trigger the flaw via a crafted HTML page, leading to heap corruption during browser processing of attacker-controlled web content. Publicly available details do not identify the specific vulnerable V8 function or code path, and Google restricted technical details pending broad patch adoption.
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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.
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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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A V8 vulnerability credited to Google Big Sleep in Chrome release notes.
A Chrome vulnerability publicly credited to Google Big Sleep as part of AI-assisted vulnerability discovery disclosures.
A browser memory-safety vulnerability in Chrome's V8 engine referenced as another Big Sleep-attributed finding.
A high-severity out-of-bounds write vulnerability in the V8 JavaScript engine of Google Chrome that allows remote code execution via crafted HTML content. The flaw could enable attackers to corrupt memory, escape sandbox protections, crash the browser, or execute arbitrary code remotely.
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.