CVE-2026-41521

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

Published Jul 20, 2026 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4759-1 xrdp security update
Debian DSA Debian DSA DSA-6469-1 xrdp security update
History
Type Values Removed Values Added
First Time appeared Neutrinolabs
Neutrinolabs xrdp
Vendors & Products Neutrinolabs
Neutrinolabs xrdp
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak & ASLR Bypass
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 20, 2026, 6:57 PM
Reserved
Apr 20, 2026, 6:18 PM
Status
Analyzed
Published
Jul 20, 2026, 5:17 PM
Modified
Oct 24, 2026, 8:10 PM