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CVE-2026-3542 is a high-severity inappropriate implementation vulnerability in Google Chrome's V8 WebAssembly handling prior to version 145.0.7632.159. Flawed state management in the AsmJS parser can allow recursively parsed shift expressions within heap-access expressions to overwrite shared heap-access metadata. The resulting stale truncation position can corrupt the generated WebAssembly function byte stream, causing instruction or immediate bytes to be reinterpreted as WebAssembly opcodes. AsmJS-generated WebAssembly is treated as trusted by the decoder, bypassing validation checks ordinarily applied to untrusted WebAssembly input. A remote attacker can trigger the condition through a crafted HTML page containing malicious AsmJS/WebAssembly content, resulting in out-of-bounds memory access.
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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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability referenced in Gentoo GLSA-202608-31; technical details are not provided in the content.
A Chrome/V8 AsmJS state-management flaw that corrupts the generated WebAssembly opcode stream, enabling execution of unvalidated WebAssembly opcodes and potentially arbitrary read/write and arbitrary code execution outside the Ubercage sandbox.
High-severity vulnerability in Google Chrome WebAssembly due to inappropriate implementation.
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.