Bug 2499222

Summary: CVE-2026-57156 freerdp2: FreeRDP: Arbitrary code execution or denial of service via integer overflow in RDP message processing [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Jon Moroney <jmoroney>
Component: freerdp2Assignee: Neal Gompa <ngompa13>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: epel10CC: negativo17, ngompa13, oholy, tdawson
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["961e0a5a-1ee6-415c-8ad1-f0859b9b2858"]}
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Clone Of: Environment:
Last Closed: 2026-07-13 11:24:23 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2499160    

Description Jon Moroney 2026-07-10 21:13:45 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.
Comment 1 Ondrej Holy 2026-07-13 11:24:23 UTC 
The 2.x implementation of update_read_delta_points() does not perform internal allocation and does not contain the vulnerable code pattern.