How severe is CVE-2025-50171?

CVE-2025-50171 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-50171 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50171?

CVE-2025-50171 primarily affects Microsoft Windows Server 2022. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-50171?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-50171 have an EU (EUVD) identifier?

Yes. CVE-2025-50171 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24340.

When was CVE-2025-50171 published?

CVE-2025-50171 was published on 2025-08-12 and last updated on 2026-06-17.

CVE-2025-50171

CVE-2025-50171 is a critical-severity vulnerability in Microsoft Windows Server 2022 with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24340
Weakness: CWE-862
Affected product: Microsoft Windows Server 2022
Published: 2025-08-12
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2025-50171?: Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.
How severe is CVE-2025-50171?: CVE-2025-50171 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-50171 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50171?: CVE-2025-50171 primarily affects Microsoft Windows Server 2022. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-50171?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-50171 have an EU (EUVD) identifier?: Yes. CVE-2025-50171 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24340.
When was CVE-2025-50171 published?: CVE-2025-50171 was published on 2025-08-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50171

Affected products (3)

cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

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