Bug 2430881 (CVE-2026-23732) - CVE-2026-23732 freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow
Summary: CVE-2026-23732 freerdp: FreeRDP: Denial of Service via FastGlyph parsing buff...
Keywords:
Status: NEW
Alias: CVE-2026-23732
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-19 18:01 UTC by OSIDB Bzimport
Modified: 2026-04-28 06:42 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-2026:10076 0 None None None 2026-04-23 07:15:02 UTC
Red Hat Product Errata RHSA-2026:10734 0 None None None 2026-04-27 05:36:35 UTC
Red Hat Product Errata RHSA-2026:10735 0 None None None 2026-04-27 05:39:06 UTC
Red Hat Product Errata RHSA-2026:10951 0 None None None 2026-04-27 14:50:32 UTC
Red Hat Product Errata RHSA-2026:11323 0 None None None 2026-04-28 06:42:44 UTC
Red Hat Product Errata RHSA-2026:6340 0 None None None 2026-04-01 09:07:15 UTC
Red Hat Product Errata RHSA-2026:6727 0 None None None 2026-04-07 06:15:48 UTC
Red Hat Product Errata RHSA-2026:6743 0 None None None 2026-04-07 07:42:06 UTC
Red Hat Product Errata RHSA-2026:6799 0 None None None 2026-04-07 12:19:02 UTC
Red Hat Product Errata RHSA-2026:6918 0 None None None 2026-04-07 23:04:54 UTC
Red Hat Product Errata RHSA-2026:6958 0 None None None 2026-04-08 05:09:09 UTC
Red Hat Product Errata RHSA-2026:9640 0 None None None 2026-04-22 07:45:47 UTC
Red Hat Product Errata RHSA-2026:9641 0 None None None 2026-04-22 07:48:50 UTC

Description OSIDB Bzimport 2026-01-19 18:01:45 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts `cbData`/remaining length and never validates against the minimum size implied by `cx/cy`. A malicious server can trigger a client‑side global buffer overflow, causing a crash (DoS). Version 3.21.0 contains a patch for the issue.
Comment 2 errata-xmlrpc 2026-04-01 09:07:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6340 https://access.redhat.com/errata/RHSA-2026:6340
Comment 3 errata-xmlrpc 2026-04-07 06:15:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:6727 https://access.redhat.com/errata/RHSA-2026:6727
Comment 4 errata-xmlrpc 2026-04-07 07:42:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:6743 https://access.redhat.com/errata/RHSA-2026:6743
Comment 5 errata-xmlrpc 2026-04-07 12:19:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:6799 https://access.redhat.com/errata/RHSA-2026:6799
Comment 6 errata-xmlrpc 2026-04-07 23:04:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6918 https://access.redhat.com/errata/RHSA-2026:6918
Comment 7 errata-xmlrpc 2026-04-08 05:09:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:6958 https://access.redhat.com/errata/RHSA-2026:6958
Comment 8 errata-xmlrpc 2026-04-22 07:45:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:9640 https://access.redhat.com/errata/RHSA-2026:9640
Comment 9 errata-xmlrpc 2026-04-22 07:48:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:9641 https://access.redhat.com/errata/RHSA-2026:9641
Comment 10 errata-xmlrpc 2026-04-23 07:15:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:10076 https://access.redhat.com/errata/RHSA-2026:10076
Comment 12 errata-xmlrpc 2026-04-27 05:36:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:10734 https://access.redhat.com/errata/RHSA-2026:10734
Comment 13 errata-xmlrpc 2026-04-27 05:39:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:10735 https://access.redhat.com/errata/RHSA-2026:10735
Comment 14 errata-xmlrpc 2026-04-27 14:50:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:10951 https://access.redhat.com/errata/RHSA-2026:10951
Comment 15 errata-xmlrpc 2026-04-28 06:42:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:11323 https://access.redhat.com/errata/RHSA-2026:11323
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