NULL Pointer Dereference Affecting freerdp/freerdp package, versions [,3.31.0)
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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- published18 Oct 2026
- disclosed15 Sept 2026
- creditUnknown
Introduced: 15 Sep 2026
CVE-2026-91954 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.31.0 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference via the gdi_surface_bits function when processing Surface Bits commands with the NSCodec codec ID. An attacker can cause a client crash by sending a crafted Surface Bits command that claims to use NSCodec, even if the codec is disabled. This is only exploitable if a client connects to a malicious RDP server.