CVE-2026-112277
rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in bitmap.c that allows malicious RDP servers to crash clients by sending malformed 32 bpp compressed bitmaps. Attackers can declare a large bitmap geometry with a short compressed body in bitmap update PDUs or bitmap cache orders, causing unbounded reads past the receive buffer and denial of service.
| CWE | CWE-125 |
| Vendor | rdesktop |
| Product | rdesktop |
| Published | Oct 19, 2026 |
| Last Updated | Oct 19, 2026 |
Stay Ahead of the Next One
Get instant alerts for rdesktop rdesktop
Be the first to know when new medium vulnerabilities affecting rdesktop rdesktop are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
rdesktop / rdesktop
0 ≤ 1.9.0
References
hackmd.io: https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read github.com: https://github.com/rdesktop/rdesktop/issues/436 github.com: https://github.com/rdesktop/rdesktop/pull/437 github.com: https://github.com/rdesktop/rdesktop/blob/v1.9.0/bitmap.c vulncheck.com: https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-plane
Credits
HaiND from the Post and Telecommunication Institute of Technology m4st3r3k