Privilege elevation via heap buffer overflow
Published Sep 8, 2026 · Updated Sep 9, 2026
Heap-based buffer overflow in Microsoft Standard XPS allows remote authenticated users to elevate privileges through network content. Microsoft has not disclosed the parser routine, input field, or unchecked memory operation that overruns the heap buffer. Exploitation requires authorized network access, and the published material does not specify the privileges ultimately obtained.
Summary
What happened
Heap-based buffer overflow in Microsoft Standard XPS allows remote authenticated users to elevate privileges through network content. Microsoft has not disclosed the parser routine, input field, or unchecked memory operation that overruns the heap buffer. Exploitation requires authorized network access, and the published material does not specify the privileges ultimately obtained.
The record
- CVE
- CVE-2026-69313
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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=10.0.17763.0 <10.0.17763.9245
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
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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