Heap-based Buffer Overflow Affecting freerdp/freerdp package, versions [,3.24.2)
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- published31 Mar 2026
- disclosed31 Mar 2026
- creditCalvin Young
Introduced: 31 Mar 2026
NewCVE-2026-33986 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade freerdp/freerdp to version 3.24.2 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the yuv_ensure_buffer function. An attacker can achieve arbitrary code execution or cause a denial of service by triggering a failure in the winpr_aligned_recalloc process, leading to a mismatch between buffer dimensions and allocated memory, which results in a heap-based out-of-bounds write.