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TI-2026-16895 Aliases CVE-2026-20868GHSA-pp2w-5337-f6wg

Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Priority MEDIUM 43CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01389 72nd percentileScored 2026-11-07
Fix Fixed Microsoft: 13 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.878310.0.14393.8783Patch availableCNA
MicrosoftWindows 10 Version 180910.0.17763.0 to before 10.0.17763.827610.0.17763.8276Patch availableCNA
MicrosoftWindows 10 Version 21H210.0.19044.0 to before 10.0.19044.680910.0.19044.6809Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.680910.0.19045.6809Patch availableCNA
MicrosoftWindows 11 version 23H210.0.22631.0 to before 10.0.22631.649110.0.22631.6491Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.649110.0.22631.6491Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.762310.0.26100.7623Patch availableCNA
MicrosoftWindows 11 Version 25H210.0.26200.0 to before 10.0.26200.762310.0.26200.7623Patch availableCNA
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0 to before 6.1.7601.281176.1.7601.28117Patch availableCNA
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 to before 6.1.7601.281176.1.7601.28117Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 to before 6.0.6003.237176.0.6003.23717Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 to before 6.0.6003.237176.0.6003.23717Patch availableCNA
MicrosoftWindows Server 20126.2.9200.0 to before 6.2.9200.258686.2.9200.25868Patch availableCNA
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to before 6.2.9200.258686.2.9200.25868Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.229686.3.9600.22968Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.229686.3.9600.22968Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.878310.0.14393.8783Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.878310.0.14393.8783Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.827610.0.17763.8276Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.827610.0.17763.8276Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.464810.0.20348.4648Patch availableCNA
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.209210.0.25398.2092Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.3223010.0.26100.32230Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.3223010.0.26100.32230Patch availableCNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8783 Fixed in 10.0.14393.8783 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8276 Fixed in 10.0.17763.8276 Patch available CNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19044.0 to before 10.0.19044.6809 Fixed in 10.0.19044.6809 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.6809 Fixed in 10.0.19045.6809 Patch available CNA
  • Windows 11 version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.6491 Fixed in 10.0.22631.6491 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.6491 Fixed in 10.0.22631.6491 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.7623 Fixed in 10.0.26100.7623 Patch available CNA
  • Windows 11 Version 25H2 VendorMicrosoft Affected 10.0.26200.0 to before 10.0.26200.7623 Fixed in 10.0.26200.7623 Patch available CNA
  • Windows Server 2008 R2 Service Pack 1 VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.28117 Fixed in 6.1.7601.28117 Patch available CNA
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation) VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.28117 Fixed in 6.1.7601.28117 Patch available CNA
  • Windows Server 2008 Service Pack 2 VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.23717 Fixed in 6.0.6003.23717 Patch available CNA
  • Windows Server 2008 Service Pack 2 (Server Core installation) VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.23717 Fixed in 6.0.6003.23717 Patch available CNA
  • Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25868 Fixed in 6.2.9200.25868 Patch available CNA
  • Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25868 Fixed in 6.2.9200.25868 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.22968 Fixed in 6.3.9600.22968 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.22968 Fixed in 6.3.9600.22968 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8783 Fixed in 10.0.14393.8783 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8783 Fixed in 10.0.14393.8783 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8276 Fixed in 10.0.17763.8276 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8276 Fixed in 10.0.17763.8276 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.4648 Fixed in 10.0.20348.4648 Patch available CNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.2092 Fixed in 10.0.25398.2092 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32230 Fixed in 10.0.26100.32230 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32230 Fixed in 10.0.26100.32230 Patch available CNA

CPE configurations NVD · 19

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*before 10.0.14393.8783VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*before 10.0.14393.8783VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*before 10.0.17763.8276VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*before 10.0.17763.8276VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*before 10.0.19044.6809VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*before 10.0.19045.6809VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*before 10.0.22631.6491VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*before 10.0.26100.7623VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*before 10.0.26200.7623VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* Versions before 10.0.14393.8783 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* Versions before 10.0.14393.8783 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* Versions before 10.0.17763.8276 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* Versions before 10.0.17763.8276 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* Versions before 10.0.19044.6809 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* Versions before 10.0.19045.6809 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* Versions before 10.0.22631.6491 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* Versions before 10.0.26100.7623 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:* Versions before 10.0.26200.7623 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft
Show 9 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*r2 sp1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.8783VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.8276VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.4648VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.2092VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*before 10.0.26100.32230VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.8783 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.8276 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.4648 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.2092 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions before 10.0.26100.32230 Vulnerable ·Microsoft

Remediation

Microsoft 13 updates

  • KB5074109
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.7623
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.7623
    • Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.7623
    • Windows 11 Version 25H2 for x64-based Systems 10.0.26200.7623
  • KB5073724
    Security Update
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.6809
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.6809
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.6809
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.6809
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.6809
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.6809
  • KB5073723
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8276
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.8276
    • Windows Server 2019 10.0.17763.8276
    • Windows Server 2019 (Server Core installation) 10.0.17763.8276
Show 10 more Microsoft updates
  • KB5073722
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8783
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.8783
    • Windows Server 2016 10.0.14393.8783
    • Windows Server 2016 (Server Core installation) 10.0.14393.8783
  • KB5073700
    Security Only
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.23717
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.23717
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.23717
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.23717
  • KB5073699
    Security Only
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.28117
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.28117
  • KB5073698
    Monthly Rollup
    • Windows Server 2012 6.2.9200.25868
    • Windows Server 2012 (Server Core installation) 6.2.9200.25868
  • KB5073697
    Monthly Rollup
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.23717
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.23717
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.23717
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.23717
  • KB5073696
    Monthly Rollup
    • Windows Server 2012 R2 6.3.9600.22968
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.22968
  • KB5073695
    Monthly Rollup
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.28117
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.28117
  • KB5073457
    Security Update
    • Windows Server 2022 10.0.20348.4648
    • Windows Server 2022 (Server Core installation) 10.0.20348.4648
  • KB5073455
    Security Update
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.6491
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.6491
  • KB5073450
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2092

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Windows Server 2025Fixed 10.0.26100.32230 · Security Update
Windows Server 2025 (Server Core installation)Fixed 10.0.26100.32230 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20868
  2. 2026-10-03 Alias added: GHSA-pp2w-5337-f6wg

References

Patch 1

  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-73128 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
See all 3427 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences