Out-of-bounds memory write via WebAudio heap overflow
Published Mar 24, 2026 · Updated Mar 24, 2026
Heap buffer overflow in WebAudio in Google Chrome before 146.0.7680.165 allows remote attackers to write out of bounds via crafted HTML. The restricted Chromium issue leaves the affected WebAudio code path and the allocation or bounds-check failure undisclosed. A target must load attacker-controlled HTML; published records establish an out-of-bounds write but not code execution or a sandbox escape.
Summary
What happened
Heap buffer overflow in WebAudio in Google Chrome before 146.0.7680.165 allows remote attackers to write out of bounds via crafted HTML. The restricted Chromium issue leaves the affected WebAudio code path and the allocation or bounds-check failure undisclosed. A target must load attacker-controlled HTML; published records establish an out-of-bounds write but not code execution or a sandbox escape.
The record
- CVE
- CVE-2026-4673
- Published
- Mar 24, 2026
- Updated
- Mar 24, 2026
- Vendor
- Go standard library
- Product
- Google Chrome
- Classifications
- CWE-787, CWE-122
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 24, 2026CVE publishedPublication date reported by the CVE source.
- Mar 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=146.0.7680.165 <146.0.7680.165
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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