Adjacent privilege escalation via DHCP heap overflow
Published Jul 14, 2026 · Updated Jul 14, 2026
Heap-based buffer overflow in Microsoft Windows DHCP Server allows remote authenticated users to elevate privileges over an adjacent network. Microsoft identifies the DHCP component and heap overwrite class but has not published the affected parser, field, or incorrect memory operation. Exploitation requires low privileges and adjacent-network access; successful exploitation compromises confidentiality, integrity, and availability.
Summary
What happened
Heap-based buffer overflow in Microsoft Windows DHCP Server allows remote authenticated users to elevate privileges over an adjacent network. Microsoft identifies the DHCP component and heap overwrite class but has not published the affected parser, field, or incorrect memory operation. Exploitation requires low privileges and adjacent-network access; successful exploitation compromises confidentiality, integrity, and availability.
The record
- CVE
- CVE-2026-50683
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1068
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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 <10.0.17763.9020
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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