CVE-2026-91958
FreeRDP versions before 3.31.0 fail to validate MonitorIds array values when parsing RDP connection files, allowing unbounded array indexing in xf_detect_monitors. Attackers can craft a malicious RDP file with an out-of-range selectedmonitors value to trigger out-of-bounds heap read and write operations when opened in xfreerdp.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.9
- CVSS vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.20%
- CWE
- CWE-125
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- FreeRDP FreeRDP
- FreeRDP FreeRDP
Weakness type
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