Heap-based Buffer Overflow Affecting freerdp/freerdp package, versions [,3.27.0)
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-21192295
- published18 Oct 2026
- disclosed19 Aug 2026
- creditUnknown
Introduced: 19 Aug 2026
CVE-2026-55191 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.27.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the avc444_ensure_buffer process. An attacker can cause a client crash or potentially execute arbitrary code by supplying crafted surface dimensions that result in an undersized buffer allocation and subsequent heap corruption during YUV buffer processing.