Integer Overflow or Wraparound 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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Start learning- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-21191768
- published18 Oct 2026
- disclosed15 Sept 2026
- creditUnknown
Introduced: 15 Sep 2026
CVE-2026-91960 (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 Integer Overflow or Wraparound via the Stream_EnsureRemainingCapacity function. An attacker can cause a crash of the client application by sending a specially crafted WebSocket Ping frame with a manipulated 64-bit extended payload length, leading to integer wraparound and a double free.