CVE-2022-39317
freerdp: undefined behaviour in zgfx decoder
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Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 16, 2022
Updated · November 22, 2025
Description
An out-of-bounds read vulnerability was discovered in FreeRDP due to missing a range check for input offset index in the ZGFX decoder. A malicious server can trick a FreeRDP based client to read out-of-bound data and try to decode it, resulting in a crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 3.7CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
CWE-125 · Out-of-bounds Read