🛡️ CVE-2025-59509 — windows-10-1809

🟡 CVSS 5.5 — Medium ✅ No Known Exploit CWE-201 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Insertion of sensitive information into sent data in Windows Speech allows an authorized attacker to disclose information locally.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Affected software

CVE-2025-59509 is recorded against 10 packages.

  • windows-10-1809 (fixed in 10.0.17763.8027)
  • windows-10-21h2 (fixed in 10.0.19044.6575)
  • windows-10-22h2 (fixed in 10.0.19045.6575)
  • windows-11-23h2 (fixed in 10.0.22631.6199)
  • windows-11-24h2 (fixed in 10.0.26100.7092)
  • windows-11-25h2 (fixed in 10.0.26200.7092)
  • windows-server-2019 (fixed in 10.0.17763.8027)
  • windows-server-2022 (fixed in 10.0.20348.4346)
  • windows-server-2022-23h2 (fixed in 10.0.25398.1965)
  • windows-server-2025 (fixed in 10.0.26100.7092)

Timeline and source

Published on 11 November 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-201
Public Exploit ✅ No
Source NVD
Published 2025-11-11
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
windows-10-1809 10.0.17763.8027
windows-10-21h2 10.0.19044.6575
windows-10-22h2 10.0.19045.6575
windows-11-23h2 10.0.22631.6199
windows-11-24h2 10.0.26100.7092
windows-11-25h2 10.0.26200.7092
windows-server-2019 10.0.17763.8027
windows-server-2022 10.0.20348.4346
windows-server-2022-23h2 10.0.25398.1965
windows-server-2025 10.0.26100.7092

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