Improper Validation of Integrity Check Value Affecting xrdp package, versions <0.10.6-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.17% (8th percentile)

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  • Snyk IDSNYK-ALPINE323-XRDP-16159313
  • published23 Apr 2026
  • disclosed17 Apr 2026

Introduced: 17 Apr 2026

CVE-2026-32105  (opens in a new tab)
CWE-354  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 xrdp to version 0.10.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xrdp package and not the xrdp package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

xrdp is an open source RDP server. In versions through 0.10.5, xrdp does not implement verification for the Message Authentication Code (MAC) signature of encrypted RDP packets when using the "Classic RDP Security" layer. While the sender correctly generates signatures, the receiving logic lacks the necessary implementation to validate the 8-byte integrity signature, causing it to be silently ignored. An unauthenticated attacker with man-in-the-middle (MITM) capabilities can exploit this missing check to modify encrypted traffic in transit without detection. It does not affect connections where the TLS security layer is enforced. This issue has been fixed in version 0.10.6. If users are unable to immediately upgrade, they should configure xrdp.ini to enforce TLS security (security_layer=tls) to ensure end-to-end integrity.

CVSS Base Scores

version 3.1