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Vulnerability · Published Jul 20, 2026 · Assigned by GitHub_M

CVE-2026-41521xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak & ASLR Bypass

High 8.2

In plain English

A high-severity integer overflow in xrdp from neutrinolabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.7%top 47.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12xrdp0.9.21.1-1+deb12u3DEBIAN-CVE-2026-41521
Debian:13xrdp0.10.1-3.1+deb13u2DEBIAN-CVE-2026-41521
Debian:14xrdp0.10.6.1-2DEBIAN-CVE-2026-41521
Ubuntu:22.04:LTSxrdpno fix listedUBUNTU-CVE-2026-41521
Ubuntu:24.04:LTSxrdpno fix listedUBUNTU-CVE-2026-41521
Ubuntu:25.10xrdpno fix listedUBUNTU-CVE-2026-41521
Ubuntu:26.04:LTSxrdpno fix listedUBUNTU-CVE-2026-41521
Ubuntu:26.10xrdpno fix listedUBUNTU-CVE-2026-41521

Affected products (as reported)

VendorProductVersions
neutrinolabs xrdp < 0.10.6.1

Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

References