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CVE-2023-3420 is a high-severity type confusion vulnerability in the V8 JavaScript engine in Google Chrome. It affects Chrome versions prior to 114.0.5735.198, including desktop releases before 114.0.5735.198/199 on Windows and before 114.0.5735.198 on Linux and macOS. The flaw can be triggered by a remote attacker through a crafted HTML page, leading to heap corruption in the browser process. Type confusion in V8 can cause the engine to treat an object as an incompatible type during JavaScript execution, creating unsafe memory access conditions that may be exploitable for further compromise.
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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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.