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6.2Media KEV

CVE-2026-21525Windows Remote Access Connection Manager Denial of Service Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2 Publicada: (hace 8 meses)

Explotación conocida — Microsoft Windows NULL Pointer Dereference Vulnerability

CISA confirmó el 10.02.2026 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 03.03.2026.

Acción requerida: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21525 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21525

Descripción

Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.

Debilidad (CWE): CWE-476

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
microsoft windows 10 1607 10.0.14393.0 – < 10.0.14393.8868
microsoft windows 10 1809 10.0.17763.0 – < 10.0.17763.8389
microsoft windows 10 21H2 10.0.19044.0 – < 10.0.19044.6937
microsoft windows 10 22H2 10.0.19045.0 – < 10.0.19045.6937
Microsoft Windows 10 Version 1607 10.0.14393.0 – < 10.0.14393.8868
Microsoft Windows 10 Version 1809 10.0.17763.0 – < 10.0.17763.8389
Microsoft Windows 10 Version 21H2 10.0.19044.0 – < 10.0.19044.6937
Microsoft Windows 10 Version 22H2 10.0.19045.0 – < 10.0.19045.6937
microsoft windows 11 23H2 10.0.22631.0 – < 10.0.22631.6649
microsoft windows 11 24H2 10.0.26100.0 – < 10.0.26100.7840
microsoft windows 11 25H2 10.0.26200.0 – < 10.0.26200.7840
microsoft windows 11 26H1 10.0.28000.0 – < 10.0.28000.1575
Microsoft Windows 11 version 22H3 10.0.22631.0 – < 10.0.22631.6649
Microsoft Windows 11 Version 23H2 10.0.22631.0 – < 10.0.22631.6649
Microsoft Windows 11 Version 24H2 10.0.26100.0 – < 10.0.26100.7840
Microsoft Windows 11 Version 25H2 10.0.26200.0 – < 10.0.26200.7840
Microsoft Windows 11 version 26H1 10.0.28000.0 – < 10.0.28000.1575
Microsoft Windows Server 2012 6.2.9200.0 – < 6.2.9200.25923
Microsoft Windows Server 2012 R2 6.3.9600.0 – < 6.3.9600.23022
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – < 6.3.9600.23022
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – < 6.2.9200.25923
Microsoft Windows Server 2016 10.0.14393.0 – < 10.0.14393.8868
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < 10.0.14393.8868
Microsoft Windows Server 2019 10.0.17763.0 – < 10.0.17763.8389
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < 10.0.17763.8389
Microsoft Windows Server 2022 10.0.20348.0 – < 10.0.20348.4773
microsoft windows server 2022 23h2 < 10.0.25398.2149
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – < 10.0.25398.2149
Microsoft Windows Server 2025 10.0.26100.0 – < 10.0.26100.32370
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – < 10.0.26100.32370
microsoft windows server 23h2 10.0.25398.0 – < 10.0.25398.2149

Referencias y parches

Coincidencias CPE (NVD) (23)
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.8868
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.8868
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.8389
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.8389
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* < 10.0.19044.6937
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* < 10.0.19044.6937
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* < 10.0.19044.6937
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* < 10.0.19045.6937
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* < 10.0.19045.6937
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* < 10.0.19045.6937
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* < 10.0.22631.6649
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* < 10.0.22631.6649
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* < 10.0.26100.7781
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* < 10.0.26100.7781
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* < 10.0.26200.7781
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* < 10.0.26200.7781
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8868
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.8389
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.4711
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* < 10.0.25398.2149
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.32313

CVE recientes del mismo producto — Windows 10

7.0Alta
CVE-2026-108135

Windows Backup Engine Elevation of Privilege Vulnerability

Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2; Microsoft Windows 11 version 23H2; Microsoft Windows 11 Version 23H2

Improper link resolution before file access ('link following') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

6.5Media
CVE-2026-108129

Role: DNS Server Information Disclosure Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

1.1%EPSS