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CVE-2026-17658 is a use-after-free vulnerability in the V8 engine in Google Chrome versions before 151.0.7922.72. A remote attacker can trigger the vulnerability through a crafted HTML page and execute arbitrary code inside the browser sandbox. The specific vulnerable function is not identified.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity use-after-free vulnerability in Chrome's V8 engine permits remote code execution within the browser sandbox through a crafted HTML page. The advisory identifies affected Chromium packages and recommends updating to version 151.0.7922.71-1~deb12u1 or later. The CVSS v3 base score is 8.8; user interaction is required.
A high-severity use-after-free vulnerability in Chrome's V8 engine.
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.