CVE-2026-112279
rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2
rdesktop rdesktop
CVSS
7.1HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 22% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- rdesktopaffected: all versions through 1.9.0CVE List
References 5
- github.com/rdesktop/rdesktop/pull/437Fixvia CVE List
- vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2Advisoryvia CVE List
- hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-readExploitvia CVE List
- github.com/rdesktop/rdesktop/issues/436Referencevia CVE List
- github.com/rdesktop/rdesktop/blob/v1.9.0/orders.cReferencevia CVE List