CVE-2026-56171

highpriority · track · 30EPSS 0.007 · 51 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.66% (51st) EPSS

CVSS 7.5 · high

Is it mine?

12 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedRemote Desktop Web Clientmsrc_csaf
2.1.65.2:Security Update:https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/web-client-whats-new
https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/web-client-whats-new
FixedWindows Admin Centermsrc_csaf
2.7.4:Security Update:https://techcommunity.microsoft.com/blog/windows-admin-center-blog/windows-admin-center-version-2606-is-now-generally-available/4530811
https://techcommunity.microsoft.com/blog/windows-admin-center-blog/windows-admin-center-version-2606-is-now-generally-available/4530811

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.1highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:Nsecondary · secure@microsoft.com USexploitability 2.8 · impact 4.2

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-359USCWE-359USCWE-359US

affected products (12)

Products and version ranges known to be affected.

Microsoft Windows Admin Centerall versionscert_bundDEcpe:/a:microsoft:windows_admin_center:-
Microsoft Windows Remote Desktop Web Clientall versionscert_bundDEcpe:/o:microsoft:windows:remote_desktop_web_client
Microsoft Remote Desktop Web Client2.0.0.0 → 2.1.65.2enisa_euvdEU
Microsoft Windows Admin Center1809.0 → 2.7.4enisa_euvdEU
Microsoft Corp Remote Desktop Web Client≤ 2.1.65.2fstec_bduRU
Microsoft Corp Windows Admin Center≤ 2.7.4fstec_bduRU
Microsoft Remote Desktop Web Clientall versionsfixedmsrc_csafUS
Microsoft Remote Desktop Web Client< 2.1.65.2msrc_csafUS
Microsoft Windows Admin Centerall versionsfixedmsrc_csafUS
Microsoft Windows Admin Center< 2.7.4msrc_csafUS
microsoft remote desktop web client< 2.1.65.2nvdUScpe:2.3:a:microsoft:remote_desktop_web_client:*:*:*:*:*:*:*:*
microsoft windows admin center< 2606nvdUScpe:2.3:a:microsoft:windows_admin_center:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2401Microsoft Windows: Mehrere SchwachstellenDeutsch2026-07-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Microsoft Windows Backup Service, Microsoft Windows Admin Center und Microsoft Windows Remote Desktop Web Client ausnutzen, um Informationen offenzulegen und um erweiterte Rechte zu erlangen.
msrc_CVE-2026-56171Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability2026-07-16csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf nvd NVD CVE.org MITRE

published 2026-07-17modified 2026-07-22

references (3)

External citations — patches, advisories, analysis.

scry

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