Heap-based Buffer Overflow Affecting freerdp/freerdp package, versions [,3.24.2)
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Heap-based Buffer Overflow vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-15857135
- published31 Mar 2026
- disclosed31 Mar 2026
- creditCalvin Young
Introduced: 31 Mar 2026
NewCVE-2026-33987 (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 via the persistent_cache_read_entry_v3 function. An attacker can cause a heap-based buffer overflow by triggering a desynchronization between the bmpSize and the memory buffer, potentially leading to arbitrary code execution or application crash.