Integer Overflow or Wraparound Affecting xrdp package, versions <0.10.6.1-2


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-XRDP-17894899
  • published8 Jul 2026
  • disclosed20 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-41521  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Debian:unstable xrdp to version 0.10.6.1-2 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 Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

xrdp is an open source RDP server. Versions 0.10.6 and prior contain an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an integer overflow during memory buffer size calculation, resulting in an undersized allocation. Subsequent processing of the incoming image data using the original oversized parameters leads to an out-of-bounds read. An unauthenticated remote attacker could exploit this flaw to disclose sensitive information from the heap memory or cause a denial of service (DoS) via a process crash. This issue has been fixed in version 0.10.6.1.

CVSS Base Scores

version 3.1