Heap corruption via V8 out-of-bounds write
Published Jan 8, 2021 · Updated Oct 21, 2025
Out-of-bounds write in Google Chrome before 86.0.4240.198 allows remote attackers to corrupt V8 heap memory through crafted HTML. Public records identify the affected component as V8 but do not disclose the faulty function or the incorrect bounds operation. Exploitation requires a user to load attacker-controlled HTML; Google reported exploitation in the wild without disclosing exploit-chain details.
Summary
What happened
Out-of-bounds write in Google Chrome before 86.0.4240.198 allows remote attackers to corrupt V8 heap memory through crafted HTML. Public records identify the affected component as V8 but do not disclose the faulty function or the incorrect bounds operation. Exploitation requires a user to load attacker-controlled HTML; Google reported exploitation in the wild without disclosing exploit-chain details.
The record
- CVE
- CVE-2020-16013
- Published
- Jan 8, 2021
- Updated
- Oct 21, 2025
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-787, T1189, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 8, 2021CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record 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=unspecified <86.0.4240.198
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- CISA Known Exploited Vulnerabilities listingknown exploited catalog
- Google reports exploitation in the wildreported exploitation
Technologies
Your stack
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Your stack
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