Review reviewHigh

CVE-2026-56171

Microsoft Remote Desktop Web Client, Windows Admin Center, remote desktop web client

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

CVSS
7.5
EPSS
0.55%
42.6% percentile
CISA KEV
Not listed
Published
2026.07.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.55%
Technical severityCVSS 7.5

Vulnerability overview

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

Affected product and versions

Product
Microsoft Remote Desktop Web Client, Windows Admin Center, remote desktop web client
Affected versions
>= 2.0.0.0 < 2.1.65.2, >= 1809.0 < 2.7.4, < 2.1.65.2, < 2606
Fixed versions
2.1.65.2, 2606

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Remote Desktop Web Client, Windows Admin Center, remote desktop web client and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-359