CVE-2026-112278: high-severity vulnerability in rdesktop
rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_raw_bmpcache
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.1epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
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 · rdesktoppublic PoCs found — 1
cve_referencehackmd.io/@haindpwn/cve-2026-112277-112278-112279-rdesktop-bitmap-decompress-oob-readunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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References
https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.chttps://github.com/rdesktop/rdesktop/pull/437https://hackmd.io/@haindpwn/cve-2026-112277-112278-112279-rdesktop-bitmap-decompress-oob-readhttps://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-readhttps://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-raw-bmpcache