Local privilege escalation via undisclosed memory mishandling
Published May 21, 2020 · Updated Aug 19, 2026
Windows Runtime memory-handling flaws in affected Windows releases allow local users to run arbitrary code in an elevated context. Microsoft has not disclosed the object type, code locus, or specific unsafe memory operation beyond improper object handling in Windows Runtime. Exploitation requires low-privileged local access and execution of a specially crafted application; successful exploitation elevates code execution.
Summary
What happened
Windows Runtime memory-handling flaws in affected Windows releases allow local users to run arbitrary code in an elevated context. Microsoft has not disclosed the object type, code locus, or specific unsafe memory operation beyond improper object handling in Windows Runtime. Exploitation requires low-privileged local access and execution of a specially crafted application; successful exploitation elevates code execution.
The record
- CVE
- CVE-2020-1157
- Published
- May 21, 2020
- Updated
- Aug 19, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 21, 2020CVE publishedPublication date reported by the CVE source.
- Aug 19, 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 <publication
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.
Technologies
Your stack
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Your stack
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