CVE-2026-50451 | Windows Routing and Remote Access Service (RRAS) Elevation of Privilege Vulnerability

Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

Published: 2026-07-14 Last update: 2026-07-15 Assigner: [email protected] Source: [email protected]
NVD Status：Awaiting Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-50451 is rated Low Risk (32.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.22%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-50451

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-15 — 0.22% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-50451

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 5.2 [email protected]

Weakness enumeration for CVE-2026-50451

GitHub Security Advisory for CVE-2026-50451

GHSA-4c2m-fqxw-9gw8 · Severity: high — Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS)...

Affected software / configurations for CVE-2026-50451

Vendor Product Version Raw CPE
microsoft windows_10_1809 >= 10.0.17763.0, < 10.0.17763.9020 cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
microsoft windows_server_2019 >= 10.0.17763.0, < 10.0.17763.9020 cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
microsoft windows_server_2022 >= 10.0.20348.0, < 10.0.20348.5386 cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
microsoft windows_10_21H2 >= 10.0.19044.0, < 10.0.19044.7548 cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
microsoft windows_10_22H2 >= 10.0.19045.0, < 10.0.19045.7548 cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
microsoft windows_server_2025 >= 10.0.26100.0, < 10.0.26100.33158 cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
microsoft windows_11_25H2 >= 10.0.26200.0, < 10.0.26200.8875 cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
microsoft windows_11_24H2 >= 10.0.26100.0, < 10.0.26100.8875 cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
microsoft windows_11_26H1 >= 10.0.28000.0, < 10.0.28000.2269 cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
microsoft windows_10_1607 >= 10.0.14393.0, < 10.0.14393.9339 cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
microsoft windows_server_2016 >= 10.0.14393.0, < 10.0.14393.9339 cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
microsoft windows_server_2012 >= 6.2.9200.0, < 6.2.9200.26226 cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
microsoft windows_server_2012_R2 >= 6.3.9600.0, < 6.3.9600.23291 cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*

References for CVE-2026-50451

cvelogic Threat Intelligence