Heap-based Buffer Overflow Affecting freerdp/freerdp package, versions [,3.21.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-15038737
- published20 Jan 2026
- disclosed19 Jan 2026
- creditKim Dong Han
Introduced: 19 Jan 2026
CVE-2026-23530 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.21.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the freerdp_bitmap_decompress_planar function when bitmap dimensions are not properly validated during decompression. An attacker can cause a crash on the client system by sending specially crafted bitmap data from a malicious server.