CVE-2025-59259
published 2025-10-14CVE-2025-59259: Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
PriorityP338medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
1.40%
69.4th percentile
Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
Affected
46 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21161 | 10.0.10240.21161 |
| microsoft | windows_10_1607 | < 10.0.14393.8519 | 10.0.14393.8519 |
| microsoft | windows_10_1809 | < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_10_21h2 | < 10.0.19044.6456 | 10.0.19044.6456 |
| microsoft | windows_10_22h2 | < 10.0.19045.6456 | 10.0.19045.6456 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21161 | 10.0.10240.21161 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8519 | 10.0.14393.8519 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6456 | 10.0.19044.6456 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6456 | 10.0.19045.6456 |
| microsoft | windows_11_22h2 | < 10.0.22621.6060 | 10.0.22621.6060 |
| microsoft | windows_11_23h2 | <= 10.0.22631.6060 | — |
| microsoft | windows_11_24h2 | < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_25h2 | < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.6060 | 10.0.22621.6060 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.6060 | 10.0.22631.6060 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.6060 | 10.0.22631.6060 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25722 | 6.2.9200.25722 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22824 | 6.3.9600.22824 |
| microsoft | windows_server_2016 | <= 10.0.14393.8519 | — |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8519 | 10.0.14393.8519 |
| microsoft | windows_server_2019 | < 10.0.17763.7919 | 10.0.17763.7919 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vendor_msrc6.5MEDIUM
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GHSA
GHSA-36q9-26rq-9p9m: Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network
ghsa_unreviewed·2025-10-14
CVE-2025-59259 [MEDIUM] CWE-1287 GHSA-36q9-26rq-9p9m: Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network
Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
Microsoft
Windows Local Session Manager (LSM) Denial of Service Vulnerability
vendor_msrc·2025-10-14·CVSS 6.5
CVE-2025-59259 [MEDIUM] CWE-1287 Windows Local Session Manager (LSM) Denial of Service Vulnerability
Windows Local Session Manager (LSM) Denial of Service Vulnerability
Description: Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
Windows Local Session Manager (LSM): Windows Local Session Manager (LSM)
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Denial of Service
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066586
Reference: https://support.microsoft.com/help/5066586
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066782
Reference: https://support.microsoft.com/help/5066782
Reference: https://catalog.update.microsof
No detection rules found.
No public exploits indexed.
2025-10-14
Published