Widely-used Chrome WebAssembly issue; exploitation could impact many orgs via malicious browsing; broad IT awareness required.
CVE-2026-3542
Chrome WebAssembly OOB access via crafted page
Is CVE-2026-3542 being exploited?
Not confirmed. CVE-2026-3542 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-3542?
CVE-2026-3542 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-3542?
Yes. A fix has been recorded for CVE-2026-3542. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-3542 affect?
CVE-2026-3542 affects Google Chrome. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-3542?
Update Chrome to 145.0.7632.159 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted HTML page exploiting WebAssembly memory bounds in Chrome before 145.0.7632.159
Patch when possible
- affected< 145.0.7632.159
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.