CVE-2026-112279

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

19 Oct 2026, 18:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read -~~	() https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read -

19 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-19 14:17

Updated : 2026-10-19 21:14

NVD link : CVE-2026-112279

Mitre link : CVE-2026-112279

CVE.ORG link : CVE-2026-112279

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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