Local disclosure of small heap-memory portions
Published Mar 9, 2022 · Updated Jul 8, 2025
Information disclosure in Microsoft Media Foundation on affected Windows releases allows local users to read portions of heap memory. Microsoft has not published the exact parsing locus or the operation that mishandles attacker-controlled content. Exploitation requires user interaction with content handled by Media Foundation, and disclosure is limited to small portions of heap memory.
Summary
What happened
Information disclosure in Microsoft Media Foundation on affected Windows releases allows local users to read portions of heap memory. Microsoft has not published the exact parsing locus or the operation that mishandles attacker-controlled content. Exploitation requires user interaction with content handled by Media Foundation, and disclosure is limited to small portions of heap memory.
The record
- CVE
- CVE-2022-21977
- Published
- Mar 9, 2022
- Updated
- Jul 8, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 9, 2022CVE publishedPublication date reported by the CVE source.
- Jul 8, 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=10.0.10240.0 <10.0.10240.19235
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
No sourced classifications are available.
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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