Local memory disclosure
Published Jul 16, 2021 · Updated Aug 10, 2026
Information disclosure in Microsoft GDI+ on affected Windows releases allows local users to read memory through unspecified local actions. Microsoft has not published the vulnerable GDI+ function, input format, or precise memory-handling error. Exploitation requires low-privileged local access and exposes memory contents without reported integrity or availability impact.
Summary
What happened
Information disclosure in Microsoft GDI+ on affected Windows releases allows local users to read memory through unspecified local actions. Microsoft has not published the vulnerable GDI+ function, input format, or precise memory-handling error. Exploitation requires low-privileged local access and exposes memory contents without reported integrity or availability impact.
The record
- CVE
- CVE-2021-34440
- Published
- Jul 16, 2021
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 16, 2021CVE publishedPublication date reported by the CVE source.
- Aug 10, 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=10.0.10240.0 <10.0.10240.19003
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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