CVE-2026-112278
rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_raw_bmpcache
rdesktop rdesktop
CVSS
7.1HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 22 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% 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_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.
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
- hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-readAdvisoryvia CVE List
- vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-raw-bmpcacheAdvisoryvia CVE List
- hackmd.io/@haindpwn/cve-2026-112277-112278-112279-rdesktop-bitmap-decompress-oob-readExploitvia CVE List
- github.com/rdesktop/rdesktop/blob/v1.9.0/orders.cReferencevia CVE List