Memory disclosure via FedCM out-of-bounds read
Published Sep 5, 2023 · Updated Jun 25, 2025
Out-of-bounds read in Google Chrome's FedCM before 116.0.5845.179 allows remote attackers to read memory via a crafted HTML page. The FedCM component accesses memory outside an intended buffer while processing attacker-controlled page content; Google has not disclosed the precise faulty function or bounds operation. Exploitation requires user interaction with the crafted page and prior compromise of Chrome's renderer process, and the documented consequence is an out-of-bounds memory read rather than a write.
Summary
What happened
Out-of-bounds read in Google Chrome's FedCM before 116.0.5845.179 allows remote attackers to read memory via a crafted HTML page. The FedCM component accesses memory outside an intended buffer while processing attacker-controlled page content; Google has not disclosed the precise faulty function or bounds operation. Exploitation requires user interaction with the crafted page and prior compromise of Chrome's renderer process, and the documented consequence is an out-of-bounds memory read rather than a write.
The record
- CVE
- CVE-2023-4761
- Published
- Sep 5, 2023
- Updated
- Jun 25, 2025
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 5, 2023CVE publishedPublication date reported by the CVE source.
- Jun 25, 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?
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- Affected versionversion=116.0.5845.179 <116.0.5845.179
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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