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CVE-2026-22854

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Date: January 14, 2026

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-22854
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47vj-g3c3-3rmf
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
https://www.mend.io/vulnerability-database/CVE-2026-22854

Severity Score

Weakness Type (CWE)

Heap-based Buffer Overflow

CWE-122

Top Fix

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Upgrade Version

Upgrade to version https://github.com/FreeRDP/FreeRDP.git - 3.20.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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