rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_raw_bmpcache() in orders.c that allows malicious RDP servers to crash clients. Attackers can send a raw bitmap cache order declaring large width, height, and bpp values with a tiny payload, causing memcpy() to read past the receive buffer and crash the client.
History

Fri, 23 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Oct 2026 03:30:00 +0000


Tue, 20 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 19 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_raw_bmpcache() in orders.c that allows malicious RDP servers to crash clients. Attackers can send a raw bitmap cache order declaring large width, height, and bpp values with a tiny payload, causing memcpy() to read past the receive buffer and crash the client.
Title rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_raw_bmpcache
First Time appeared Rdesktop
Rdesktop rdesktop
Weaknesses CWE-125
CPEs cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*
Vendors & Products Rdesktop
Rdesktop rdesktop
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-19T13:55:24.239Z

Updated: 2026-10-22T02:52:31.934Z

Reserved: 2026-10-19T13:25:29.896Z

Link: CVE-2026-112278

cve-icon Vulnrichment

Updated: 2026-10-22T02:52:25.447Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T14:17:05.830

Modified: 2026-10-22T03:16:36.827

Link: CVE-2026-112278

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-19T13:55:24Z

Links: CVE-2026-112278 - Bugzilla