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CVE-2025-55697

24
FAUCET Score

CVE-2025-55697 is a high-severity heap-based buffer overflow vulnerability in Azure Local, affecting Microsoft Windows Server 2022 23H2 and Windows Server 2025. An authorized local attacker can exploit this flaw to achieve significant privilege escalation, leading to high impact on confidentiality, integrity, and availability. While there is no public exploit code or evidence of active exploitation, the vulnerability has garnered notable community discussion and media coverage, indicating awareness within the security landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.0.25398.1913CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
< 10.0.26100.6899CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 63rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: Windows Server 2025 (Server Core installation)Fixed in: 10.0.26100.6899
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2025Fixed in: 10.0.26100.6899
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2022, 23H2 Edition (Server Core installation)Fixed in: 10.0.25398.1913
View patch
microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2025-Oct/CVE-2025-55697Important

Azure Local Elevation of Privilege Vulnerability

Oct 14, 2025

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2025-55697
Vendor Advisory