MEDIUM

CVE-2026-91954

2026-09-15 CVSS v3.1

CVSS

6.5

Description

FreeRDP before 3.31.0 contains a null pointer dereference vulnerability in gdi_surface_bits when processing Surface Bits commands with NSCodec codec ID. A malicious RDP server can crash a FreeRDP client by sending a crafted Surface Bits command claiming to use NSCodec, even when the codec is disabled.

Weakness (CWE)

CWE-476 NULL Pointer Dereference

EPSS Score

0.35%

Probability of exploitation in next 30 days

28.2th percentile

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-ffjr-p229-hpch https://www.vulncheck.com/advisories/freerdp-before-3.31.0-null-pointer-dereference-via-nscodec

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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