CVE-2025-21309 is a Remote Code Execution vulnerability affecting Microsoft Windows Remote Desktop Services across various Windows Server versions, including 2012 through 2025. With a CVSS score of 8.1 (HIGH), this vulnerability is network-exploitable with high attack complexity and no user interaction required, potentially leading to complete compromise of confidentiality, integrity, and availability. While it is not currently listed in CISA's KEV catalog and no public exploit code (Metasploit, Nuclei, ExploitDB) is available, its recent mention in media coverage and community discussions indicates emerging awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | ||
r2CPE matchmatch criteria | cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | ||
< 10.0.14393.7699CPE matchmatch criteria | cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* | ||
< 10.0.17763.6775CPE matchmatch criteria | cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* | ||
< 10.0.20348.3091CPE matchmatch criteria | cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.