Buffer overflow in Microsoft Windows Server 2022
CVE-2026-45648
Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.009 · change: -0.002
Affected products
- Microsoft Windows Server 2022 — versions 10.0.20348.0
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025 — versions 10.0.26100.0
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core Installation) — versions 10.0.26100.0
Weakness classification (CWE)
References
- Windows Active Directory Domain Services Remote Code Execution Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-45648?
- CVE-2026-45648 is a high-severity vulnerability in Microsoft Windows Server 2022, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-06-09.
- How severe is CVE-2026-45648?
- High severity. CVSS v3 base score is 8.8 out of 10.