Heap corruption via bad Loader cast
Published Dec 2, 2025 · Updated Feb 26, 2026
Incorrect type conversion in Google Chrome's Loader before 143.0.7499.41 allows remote attackers to corrupt heap memory through crafted HTML. Loader applies an incorrect cast while processing content supplied by the page, producing heap corruption after renderer compromise. Exploitation requires a compromised renderer and user interaction with the crafted page; the public record does not establish code execution outside the renderer sandbox.
Summary
What happened
Incorrect type conversion in Google Chrome's Loader before 143.0.7499.41 allows remote attackers to corrupt heap memory through crafted HTML. Loader applies an incorrect cast while processing content supplied by the page, producing heap corruption after renderer compromise. Exploitation requires a compromised renderer and user interaction with the crafted page; the public record does not establish code execution outside the renderer sandbox.
The record
- CVE
- CVE-2025-13720
- Published
- Dec 2, 2025
- Updated
- Feb 26, 2026
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-704, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 2, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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=143.0.7499.41 <143.0.7499.41
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
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Weakness, pattern, technique
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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