Bug 2533930 (CVE-2026-91963) - CVE-2026-91963 FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure
Summary: CVE-2026-91963 FreeRDP: FreeRDP: Remote code execution via uninitialized heap...
Keywords:
Status: NEW
Alias: CVE-2026-91963
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: 2534093 2534096
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 15:51 UTC by OSIDB Bzimport
Modified: 2026-11-06 12:33 UTC (History)
2 users (show)

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-2026:75570 0 None None None 2026-10-05 04:23:22 UTC
Red Hat Product Errata RHSA-2026:76747 0 None None None 2026-10-06 14:28:29 UTC
Red Hat Product Errata RHSA-2026:76755 0 None None None 2026-10-08 06:53:06 UTC
Red Hat Product Errata RHSA-2026:93537 0 None None None 2026-11-02 04:58:12 UTC
Red Hat Product Errata RHSA-2026:93538 0 None None None 2026-11-02 04:42:17 UTC
Red Hat Product Errata RHSA-2026:93549 0 None None None 2026-11-02 05:57:09 UTC
Red Hat Product Errata RHSA-2026:93559 0 None None None 2026-11-02 07:42:12 UTC

Description OSIDB Bzimport 2026-09-15 15:51:34 UTC 
FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.
Comment 2 Jon Orris 2026-10-05 04:23:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:75570 https://access.redhat.com/errata/RHSA-2026:75570
Comment 3 Jon Orris 2026-10-06 14:28:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:76747 https://access.redhat.com/errata/RHSA-2026:76747
Comment 4 Jon Orris 2026-10-06 14:28:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:76747 https://access.redhat.com/errata/RHSA-2026:76747
Comment 5 Jon Orris 2026-10-08 06:53:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:76755 https://access.redhat.com/errata/RHSA-2026:76755
Comment 6 Jon Orris 2026-11-02 04:42:16 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-2026:93538 https://access.redhat.com/errata/RHSA-2026:93538
Comment 7 Jon Orris 2026-11-02 04:58:11 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-2026:93537 https://access.redhat.com/errata/RHSA-2026:93537
Comment 8 Jon Orris 2026-11-02 05:57:08 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 Extended Update Support Long-Life Add-On

Via RHSA-2026:93549 https://access.redhat.com/errata/RHSA-2026:93549
Comment 9 Jon Orris 2026-11-02 07:42:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:93559 https://access.redhat.com/errata/RHSA-2026:93559
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