CVE-2026-112278
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_raw_bmpcache()…
- Risk score
- 42/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 buff…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
References
- https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c
- https://github.com/rdesktop/rdesktop/pull/437
- https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read
- https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-raw-bmpcache
- https://hackmd.io/@haindpwn/cve-2026-112277-112278-112279-rdesktop-bitmap-decompress-oob-read
Original 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.
Last activity 19 Oct 2026. Patch Forecast updates every hour.