CVE-2026-112279highCWE-125

CVE-2026-112279: high-severity vulnerability in rdesktop

rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2

Published

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.1epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in orders.c that allows malicious RDP servers to crash clients via crafted revision-2 bitmap cache orders. Attackers can send an uncompressed order with large width/height or an underflowing mode nibble and short payload, causing memcpy() reads past the receive buffer and denial of service.
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
Affected products
rdesktop · rdesktop
Related CVEs — rdesktop

In the same product, most dangerous first.

CVE-2026-112277HIGHrdesktop through 1.9.0 Heap Out-of-Bounds Read via process_planeEPSS 0.4%CVE-2026-112278HIGHrdesktop through 1.9.0 Heap Out-of-Bounds Read via process_raw_bmpcacheEPSS 0.3%
References
https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.chttps://github.com/rdesktop/rdesktop/issues/436https://github.com/rdesktop/rdesktop/pull/437https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-readhttps://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2