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NVD / CVE Program· CNA microsoft

CVE-2025-50171: Remote Desktop Spoofing Vulnerability

Noroxi assessment

Priority: Monitor (action score 36/100)

  • 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: 1% (FIRST EPSS); higher than 62.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.6216; Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.6216; Windows 10 Version 21H2 for x64-based Systems 10.0.19044.6216.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.6216; Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.6216; Windows 10 Version 21H2 for x64-based Systems 10.0.19044.6216 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

Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.

CriticalCVSS 9.1 · v3.1—No exploit Fix available
Published
Aug 12, 2025
Updated
Jun 17, 2026
EPSS
1.0% · 62th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
9.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/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-2025-50171

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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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 2022
microsoftwindows server 2022 23h2
microsoftwindows server 2025

Using windows server 2022? 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 2022

When you'll hear from us

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Running WordPress? Scan your site free with WP Lens

  • Stack 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 (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

Affected versions

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

  • microsoft windows server 2022before 10.0.20348.3989
  • microsoft windows server 2022 23h2before 10.0.25398.1791
  • microsoft windows server 2025before 10.0.26100.4851

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 21H2

    • 10.0.19044.0 and later · before 10.0.19044.6216affected

  • Microsoft Windows 10 Version 22H2

    • 10.0.19045.0 and later · before 10.0.19045.6216affected

  • Microsoft Windows 11 version 22H2

    • 10.0.22621.0 and later · before 10.0.22621.5768affected

  • Microsoft Windows 11 version 22H3

    • 10.0.22631.0 and later · before 10.0.22631.5768affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.5768affected

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.4946affected

  • Microsoft Windows Server 2022

    • 10.0.20348.0 and later · before 10.0.20348.4052affected

  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

    • 10.0.25398.0 and later · before 10.0.25398.1791affected

  • Microsoft Windows Server 2025

    • 10.0.26100.0 and later · before 10.0.26100.4946affected

  • Microsoft Windows Server 2025 (Server Core installation)

    • 10.0.26100.0 and later · before 10.0.26100.4946affected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-34715Windows Network File System Remote Code Execution Vulnerability
    63This week
  • CVE-2026-70167Windows Domain Name Service Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-45648Windows Active Directory Domain Services Remote Code Execution Vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-29808Apr 8, 2025 · Windows Cryptographic Services Information Disclosure Vulnerability
    22Monitor
  • ← EarlierCVE-2025-47978Jul 8, 2025 · Windows Kerberos Denial of Service Vulnerability
    27Monitor
  • Later →CVE-2026-69858Sep 8, 2026 · Windows DNS Server 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 21H2 for 32-bit Systems10.0.19044.6216 · KB5063709Microsoft (MSRC)
Windows 10 Version 21H2 for ARM64-based Systems10.0.19044.6216 · KB5063709Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems10.0.19044.6216 · KB5063709Microsoft (MSRC)
Windows 10 Version 22H2 for 32-bit Systems10.0.19045.6216 · KB5063709Microsoft (MSRC)
Windows 10 Version 22H2 for ARM64-based Systems10.0.19045.6216 · KB5063709Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems10.0.19045.6216 · KB5063709Microsoft (MSRC)
Windows 11 Version 22H2 for x64-based Systems10.0.22621.5768 · KB5063875Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.5768 · KB5063875Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.5768 · KB5063875Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.4851 · KB5064010Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.4946 · KB5063878Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.4851 · KB5064010Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.4946 · KB5063878Microsoft (MSRC)
Windows Server 202210.0.20348.3989 · KB5063812Microsoft (MSRC)
Windows Server 202210.0.20348.4052 · KB5063880Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.3989 · KB5063812Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.4052 · KB5063880Microsoft (MSRC)
Windows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.1791 · KB5063899Microsoft (MSRC)
Windows Server 202510.0.26100.4851 · KB5064010Microsoft (MSRC)
Windows Server 202510.0.26100.4946 · KB5063878Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.4851 · KB5064010Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.4946 · KB5063878Microsoft (MSRC)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • 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
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

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

All records