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Vulnerabilities CVE-2026-41521

CVE-2026-41521

High
Open
TLP:CLEAR

xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak & ASLR Bypass

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Description

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.

Details

CVSS Score
8.2
EPSS Score
0.39%

32th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Confidence
90%
Published
Jul 20, 2026
Last Modified
Jul 20, 2026
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