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Fencer Vulns
high 8.0

CVE-2026-26111 json

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

published 2026-03-10 8 mo ago modified 2026-06-19 4 mo ago also EUVD-2026-10677

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

Patch / fix

  • Microsoft Windows 10 Version 1607 10.0.14393.8957
  • Microsoft Windows 10 Version 1809 10.0.17763.8511
  • Microsoft Windows 10 Version 21H2 10.0.19044.7058
  • Microsoft Windows 10 Version 22H2 10.0.19045.7058
  • Microsoft Windows 11 version 22H3 10.0.22631.6783
  • Microsoft Windows 11 Version 23H2 10.0.22631.6783
  • Microsoft Windows 11 Version 24H2 10.0.26100.8037
  • Microsoft Windows 11 Version 25H2 10.0.26200.8037
  • Microsoft Windows 11 version 26H1 10.0.28000.1719
  • Microsoft Windows Server 2012 6.2.9200.25973
  • Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.25973
  • Microsoft Windows Server 2012 R2 6.3.9600.23074
  • Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.23074
  • Microsoft Windows Server 2016 10.0.14393.8957
  • Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.8957
  • Microsoft Windows Server 2019 10.0.17763.8511
  • Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.8511
  • Microsoft Windows Server 2022 10.0.20348.4893
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2207
  • Microsoft Windows Server 2025 10.0.26100.32522
  • Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.32522

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
7 mo ago

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Windows 10 Version 1607
  • Microsoft Windows 10 Version 1809
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 version 22H3
  • Microsoft Windows 11 Version 23H2
  • Microsoft Windows 11 Version 24H2
  • Microsoft Windows 11 Version 25H2
  • Microsoft Windows 11 version 26H1
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 (Server Core installation)
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2012 R2 (Server Core installation)
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2016 (Server Core installation)
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2022
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
  • Microsoft Windows Server 2025
  • Microsoft Windows Server 2025 (Server Core installation)

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.