CVE-2026-112279

CVSS 7.1 (high) · published 2026-10-19

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.

Weakness: CWE-125

Source: NVD CVE-2026-112279

References

• https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c
• https://github.com/rdesktop/rdesktop/issues/436
• 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-bmpcache2
• https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read

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