Buffer overflow in Microsoft Windows Server 2022 23h2
CVE-2025-55697
Heap-based buffer overflow in Azure Local allows an authorized attacker to elevate privileges locally.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Microsoft Windows Server 2022 23h2
- Microsoft Windows Server 2022, 23h2 Edition (Server Core Installation) — versions 10.0.25398.0
- 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
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55697 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-55697?
- CVE-2025-55697 is a high-severity vulnerability in Microsoft Windows Server 2022 23h2, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-10-14.
- How severe is CVE-2025-55697?
- High severity. CVSS v3 base score is 7.8 out of 10.