CVE-2026-41521

xrdp: xrdp is an open source RDP server

CVE-2026-41521 is fixed in 5 products on 1 platform, first by FEDORA-2026-952A486B39, released July 17, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.1
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0067
52nd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
xrdp · Debian 12.15 (bookworm) 0.9.21.1-1+deb12u3 DEBIAN-CVE-2026-41521 Aug 1, 2026
xrdp · Debian 13.5 (trixie) 0.10.1-3.1+deb13u2 DEBIAN-CVE-2026-41521 Aug 1, 2026
xrdp · Debian 14 0.10.6.1-2 DEBIAN-CVE-2026-41521 Aug 1, 2026
xrdp · Fedora 43 1:0.10.6.1-3.fc43 FEDORA-2026-952A486B39 Jul 17, 2026
xrdp-debuginfo · Fedora 43 1:0.10.6.1-3.fc43 FEDORA-2026-952A486B39 Jul 17, 2026
xrdp-debugsource · Fedora 43 1:0.10.6.1-3.fc43 FEDORA-2026-952A486B39 Jul 17, 2026
xrdp-devel · Fedora 43 1:0.10.6.1-3.fc43 FEDORA-2026-952A486B39 Jul 17, 2026
xrdp-selinux · Fedora 43 1:0.10.6.1-3.fc43 FEDORA-2026-952A486B39 Jul 17, 2026

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