CVE-2026-112279

rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2

7.1 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.31%Unchanged since Oct 20, 2026

What each source reports

CVE List Score used 7.1

rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2

Record: CVE-2026-112279
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2026-104294 7.1

Record: EUVD-2026-104294
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3rm3-gwm3-q9hj 7.1

rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in...

Record: GHSA-3rm3-gwm3-q9hj
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

NVD 7.1

Record: CVE-2026-112279
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

OSV 7.1

rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2

Record: CVE-2026-112279
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-125
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-112279 7.1

Record: DEBIAN-CVE-2026-112279
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-112279 7.1

Record: UBUNTU-CVE-2026-112279
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

rdesktop

Affected packages

Affected packages
Package	Affected	Fixed
`rdesktop` Debian:12	All versions, plus listed versions 1.9.0-21.9.0-3	None known
`rdesktop` Debian:13	All versions, plus listed versions 1.9.0-21.9.0-3	None known
`rdesktop` Debian:14	All versions, plus listed versions 1.9.0-21.9.0-3	None known
`rdesktop` Ubuntu:16.04:LTS	All versions, plus listed versions 1.8.3-1	None known
`rdesktop` Ubuntu:18.04:LTS	All versions, plus listed versions 1.8.3-21.8.3-2build1	None known
`rdesktop` Ubuntu:20.04:LTS	All versions, plus listed versions 1.8.6-2build11.9.0-11.9.0-2	None known
`rdesktop` Ubuntu:22.04:LTS	All versions, plus listed versions 1.9.0-2build1	None known
`rdesktop` Ubuntu:24.04:LTS	All versions, plus listed versions 1.9.0-2build11.9.0-2build31.9.0-2build4	None known
`rdesktop` Ubuntu:26.10	All versions, plus listed versions 1.9.0-3	None known
`rdesktop` Ubuntu:26.04:LTS	All versions, plus listed versions 1.9.0-2build41.9.0-2build51.9.0-3	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-112279 is a high vulnerability (CVSS 7.1) in Rdesktop, published October 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. No source names a fixed version.

References

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