Out-of-bounds Write Affecting freerdp/freerdp package, versions [,3.26.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-17660851
- published28 Jun 2026
- disclosed29 May 2026
- creditUnknown
Introduced: 29 May 2026
CVE-2026-44421 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.26.0 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write in the gdi_CacheToSurface process. An attacker can cause a client crash or execute arbitrary code by sending specially crafted RDPGFX PDUs from a malicious RDP server. This is only exploitable if the client connects to an untrusted server with RDPGFX enabled.
Workaround
This vulnerability can be mitigated by disabling the RDPGFX graphics acceleration feature in the client configuration and avoiding connections to untrusted or unknown external servers.