Use of Uninitialized Variable Affecting freerdp/freerdp package, versions [2.0.0,3.31.0)
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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Test your applications- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-21191222
- published18 Oct 2026
- disclosed15 Sept 2026
- creditUnknown
Introduced: 15 Sep 2026
CVE-2026-91963 (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 Use of Uninitialized Variable via the urbdrc process. An attacker can access sensitive information from uninitialized heap memory by inducing failing USB transfers from a malicious RDP server. This may allow the attacker to defeat address space layout randomization (ASLR) and potentially facilitate further exploitation when combined with other memory corruption issues.