Client heap overflow via unchecked graphics dimensions
Published Jan 19, 2024 · Updated Nov 3, 2025
Heap overflow in FreeRDP clients before 2.11.5 and 3.0.0 through 3.1.0 allows remote attackers to corrupt memory via an RDP server. freerdp_bitmap_planar_context_reset multiplies attacker-controlled aligned width and height values in a 32-bit field without checking for overflow, producing an undersized plane buffer. A victim must connect to the malicious server; later planar decoding accesses memory beyond that buffer, while server and proxy builds are unaffected.
Summary
What happened
Heap overflow in FreeRDP clients before 2.11.5 and 3.0.0 through 3.1.0 allows remote attackers to corrupt memory via an RDP server. freerdp_bitmap_planar_context_reset multiplies attacker-controlled aligned width and height values in a 32-bit field without checking for overflow, producing an undersized plane buffer. A victim must connect to the malicious server; later planar decoding accesses memory beyond that buffer, while server and proxy builds are unaffected.
The record
- CVE
- CVE-2024-22211
- Published
- Jan 19, 2024
- Updated
- Nov 3, 2025
- Vendor
- FreeRDP
- Product
- FreeRDP
- Classifications
- CWE-122, CWE-190, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2024CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.11.5
- Affected versionversion=>= 3.0.0, < 3.2.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Vendor graphics-reset PDU proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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