CVEvulnerability
CVE-2026-77889
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-08
- Last modified
- 2026-09-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-843
Description
Access of resource using incompatible type ('type confusion') in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Affected configurations
• microsoft windows 10 1607 (< 10.0.14393.9512)
• microsoft windows 10 1809 (< 10.0.17763.9245)
• microsoft windows server 2012
• microsoft windows server 2012 r2
• microsoft windows server 2016 (< 10.0.14393.9512)
• microsoft windows server 2019 (< 10.0.17763.9245)
• microsoft windows server 2022 (< 10.0.20348.5622)
• microsoft windows server 2025 (< 10.0.26100.33438)
Related
Weakness · CWE (1)
- CWE-843 Access of Resource Using Incompatible Type weakness
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77889 Patch, Vendor Advisory