Bug 2430888 (CVE-2026-23534) - CVE-2026-23534 freerdp: FreeRDP: Arbitrary code execution and denial of service via client-side heap buffer overflow
Summary: CVE-2026-23534 freerdp: FreeRDP: Arbitrary code execution and denial of servi...
Keywords:
Status: NEW
Alias: CVE-2026-23534
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2430899 2430901 2430903 2430900 2430902
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-19 18:02 UTC by OSIDB Bzimport
Modified: 2026-02-23 01:50 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:2048 0 None None None 2026-02-05 10:19:32 UTC
Red Hat Product Errata RHSA-2026:2081 0 None None None 2026-02-05 11:43:44 UTC
Red Hat Product Errata RHSA-2026:2222 0 None None None 2026-02-09 01:33:59 UTC
Red Hat Product Errata RHSA-2026:2736 0 None None None 2026-02-16 13:05:18 UTC
Red Hat Product Errata RHSA-2026:2952 0 None None None 2026-02-18 14:30:24 UTC
Red Hat Product Errata RHSA-2026:3037 0 None None None 2026-02-23 01:50:22 UTC

Description OSIDB Bzimport 2026-01-19 18:02:22 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the ClearCodec bands decode path when crafted band coordinates allow writes past the end of the destination surface buffer. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Comment 2 errata-xmlrpc 2026-02-05 10:19:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2048 https://access.redhat.com/errata/RHSA-2026:2048
Comment 3 errata-xmlrpc 2026-02-05 11:43:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:2081 https://access.redhat.com/errata/RHSA-2026:2081
Comment 4 errata-xmlrpc 2026-02-09 01:33:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:2222 https://access.redhat.com/errata/RHSA-2026:2222
Comment 5 errata-xmlrpc 2026-02-16 13:05:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:2736 https://access.redhat.com/errata/RHSA-2026:2736
Comment 6 errata-xmlrpc 2026-02-18 14:30:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:2952 https://access.redhat.com/errata/RHSA-2026:2952
Comment 7 errata-xmlrpc 2026-02-23 01:50:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:3037 https://access.redhat.com/errata/RHSA-2026:3037
Note You need to log in before you can comment on or make changes to this bug.