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NVD / CVE Program· CNA microsoft

CVE-2026-26111: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

HighCVSS 8.0 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.90% (FIRST EPSS); higher than 60.1% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8957; Windows 10 Version 1607 for x64-based Systems 10.0.14393.8957; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8511.

Low priority for now. Upgrade to Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8957; Windows 10 Version 1607 for x64-based Systems 10.0.14393.8957; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8511 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

Published
Mar 10, 2026
Updated
Jun 19, 2026
EPSS
0.9% · 60th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
8.0
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-26111

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Your free account also gets you

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  • Uptime monitoring: 1 site, instant email when it goes down
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  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
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Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
microsoftwindows server 2012
microsoftwindows server 2016
microsoftwindows server 2019
microsoftwindows server 2022
microsoftwindows server 2025

Using windows server 2012? Add it to your stack and be the first to know about CVEs like this one. (Windows Server, Active Directory)

Watch new CVEs for windows server 2012

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Windows 10 Version 1607

    • 10.0.14393.0 and later · before 10.0.14393.8957affected

  • Microsoft Windows 10 Version 1809

    • 10.0.17763.0 and later · before 10.0.17763.8511affected

  • Microsoft Windows 10 Version 21H2

    • 10.0.19044.0 and later · before 10.0.19044.7058affected

  • Microsoft Windows 10 Version 22H2

    • 10.0.19045.0 and later · before 10.0.19045.7058affected

  • Microsoft Windows 11 version 22H3

    • 10.0.22631.0 and later · before 10.0.22631.6783affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.6783affected

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.8037affected

  • Microsoft Windows 11 Version 25H2

    • 10.0.26200.0 and later · before 10.0.26200.8037affected

  • Microsoft Windows 11 version 26H1

    • 10.0.28000.0 and later · before 10.0.28000.1719affected

  • Microsoft Windows Server 2012

    • 6.2.9200.0 and later · before 6.2.9200.25973affected

  • Microsoft Windows Server 2012 (Server Core installation)

    • 6.2.9200.0 and later · before 6.2.9200.25973affected

  • Microsoft Windows Server 2012 R2

    • 6.3.9600.0 and later · before 6.3.9600.23074affected
Affected versions · NVD (6)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2012before 6.2.9200.25973
  • microsoft windows server 2012r2
  • microsoft windows server 2016before 10.0.14393.8957
  • microsoft windows server 2019before 10.0.17763.8511
  • microsoft windows server 2022before 10.0.20348.4893
  • microsoft windows server 2025before 10.0.26100.32522

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-59287Windows Server Update Service (WSUS) Remote Code Execution VulnerabilityKEV
    99Now
  • CVE-2023-24941Windows Network File System Remote Code Execution Vulnerability
    67This week
  • CVE-2026-41089Windows Netlogon Remote Code Execution Vulnerability
    63This week

Published before and after this one in the same product

  • ← EarlierCVE-2025-59258Oct 14, 2025 · Windows Active Directory Federation Services (ADFS) Information Disclosure Vulnerability
    24Monitor
  • ← EarlierCVE-2026-25172Mar 10, 2026 · Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
    32Monitor
  • Later →CVE-2026-33826Apr 14, 2026 · Windows Active Directory Remote Code Execution Vulnerability
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Windows 10 Version 1607 for 32-bit Systems10.0.14393.8957 · KB5078938Microsoft (MSRC)
Windows 10 Version 1607 for x64-based Systems10.0.14393.8957 · KB5078938Microsoft (MSRC)
Windows 10 Version 1809 for 32-bit Systems10.0.17763.8511 · KB5078752Microsoft (MSRC)
Windows 10 Version 1809 for x64-based Systems10.0.17763.8511 · KB5078752Microsoft (MSRC)
Windows 10 Version 21H2 for 32-bit Systems10.0.19044.7058 · KB5078885Microsoft (MSRC)
Windows 10 Version 21H2 for ARM64-based Systems10.0.19044.7058 · KB5078885Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems10.0.19044.7058 · KB5078885Microsoft (MSRC)
Windows 10 Version 22H2 for 32-bit Systems10.0.19045.7058 · KB5078885Microsoft (MSRC)
Windows 10 Version 22H2 for ARM64-based Systems10.0.19045.7058 · KB5078885Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems10.0.19045.7058 · KB5078885Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.6783 · KB5078883Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.6783 · KB5078883Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.7982 · KB5084597Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.8037 · KB5079473Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.7982 · KB5084597Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.8037 · KB5079473Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26100.7982 · KB5084597Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.8037 · KB5079473Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.7982 · KB5084597Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.8037 · KB5079473Microsoft (MSRC)
Windows 11 Version 26H1 for ARM64-based Systems10.0.28000.1719 · KB5079466Microsoft (MSRC)
Windows 11 version 26H1 for x64-based Systems10.0.28000.1719 · KB5079466Microsoft (MSRC)
Windows Server 20126.2.9200.25973 · KB5078775Microsoft (MSRC)
Windows Server 2012 (Server Core installation)6.2.9200.25973 · KB5078775Microsoft (MSRC)
Windows Server 2012 R26.3.9600.23074 · KB5078774Microsoft (MSRC)
Windows Server 2012 R2 (Server Core installation)6.3.9600.23074 · KB5078774Microsoft (MSRC)
Windows Server 201610.0.14393.8957 · KB5078938Microsoft (MSRC)
Windows Server 2016 (Server Core installation)10.0.14393.8957 · KB5078938Microsoft (MSRC)
Windows Server 201910.0.17763.8511 · KB5078752Microsoft (MSRC)
Windows Server 2019 (Server Core installation)10.0.17763.8511 · KB5078752Microsoft (MSRC)

+9

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-251720 days apartWindows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
    32Monitor
  • CVE-2026-3542063 days apartWindows Kernel Elevation of Privilege Vulnerability
    31Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records