VDB
msrc_CVE-2026-20830
msrc_CVE-2026-20830
PUBLISHED
CVSS 7 HIGH
Risk Scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows Server 2025 (Server Core installation) <10.0.26100.32230 | ||
| Windows Server 2025 <10.0.26100.32230 | ||
| Windows Server 2025 10.0.26100.32230 | ||
| Windows Server 2025 (Server Core installation) 10.0.26100.32230 |
Timeline
- Jan 13, 2026 CVE Published
- Jan 20, 2026 CVE Updated
- Sep 7, 2026 Security Advisory
- Sep 7, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20830 advisory
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-20830.json advisory
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 url
- https://support.microsoft.com/lifecycle url
- https://www.first.org/cvss url
- https://support.microsoft.com/en-us/topic/a6021fd2-b3b7-45a7-b68e-35c28a2a77da fix