Heap-based Buffer Overflow Affecting freerdp/freerdp package, versions [,3.28.0)
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.
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-19352813
- published27 Aug 2026
- disclosed20 Jul 2026
- creditUnknown
Introduced: 20 Jul 2026
CVE-2026-64620 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.28.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the crypto_rsa_common function. An attacker can execute arbitrary code or cause a denial of service by sending a crafted ciphertext that, when decrypted, overflows a fixed-size heap buffer on the server prior to authentication.