Bug 2483470 (CVE-2026-45700) - CVE-2026-45700 freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder allows arbitrary code execution
Summary: CVE-2026-45700 freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder...
Keywords:
Status: NEW
Alias: CVE-2026-45700
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: 2491683 2491684 2491685
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-29 21:01 UTC by OSIDB Bzimport
Modified: 2026-07-28 21:00 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-2026:36203 0 None None None 2026-07-07 13:53:21 UTC
Red Hat Product Errata RHSA-2026:37207 0 None None None 2026-07-09 09:34:21 UTC
Red Hat Product Errata RHSA-2026:38501 0 None None None 2026-07-13 07:23:35 UTC
Red Hat Product Errata RHSA-2026:46383 0 None None None 2026-07-27 02:27:05 UTC
Red Hat Product Errata RHSA-2026:46384 0 None None None 2026-07-27 03:17:19 UTC
Red Hat Product Errata RHSA-2026:46388 0 None None None 2026-07-27 03:28:49 UTC
Red Hat Product Errata RHSA-2026:46389 0 None None None 2026-07-27 03:29:05 UTC
Red Hat Product Errata RHSA-2026:46393 0 None None None 2026-07-27 02:42:15 UTC
Red Hat Product Errata RHSA-2026:47048 0 None None None 2026-07-28 11:24:27 UTC
Red Hat Product Errata RHSA-2026:47049 0 None None None 2026-07-28 11:46:13 UTC
Red Hat Product Errata RHSA-2026:47201 0 None None None 2026-07-28 21:00:35 UTC

Description OSIDB Bzimport 2026-05-29 21:01:43 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.
Comment 3 errata-xmlrpc 2026-07-07 13:53:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:36203 https://access.redhat.com/errata/RHSA-2026:36203
Comment 4 errata-xmlrpc 2026-07-09 09:34:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:37207 https://access.redhat.com/errata/RHSA-2026:37207
Comment 5 errata-xmlrpc 2026-07-13 07:23:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:38501 https://access.redhat.com/errata/RHSA-2026:38501
Comment 6 errata-xmlrpc 2026-07-27 02:27:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:46383 https://access.redhat.com/errata/RHSA-2026:46383
Comment 7 errata-xmlrpc 2026-07-27 02:42:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:46393 https://access.redhat.com/errata/RHSA-2026:46393
Comment 8 errata-xmlrpc 2026-07-27 03:17:19 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-2026:46384 https://access.redhat.com/errata/RHSA-2026:46384
Comment 9 errata-xmlrpc 2026-07-27 03:28:48 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-2026:46388 https://access.redhat.com/errata/RHSA-2026:46388
Comment 10 errata-xmlrpc 2026-07-27 03:29:04 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-2026:46389 https://access.redhat.com/errata/RHSA-2026:46389
Comment 11 errata-xmlrpc 2026-07-28 11:24:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:47048 https://access.redhat.com/errata/RHSA-2026:47048
Comment 12 errata-xmlrpc 2026-07-28 11:46:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:47049 https://access.redhat.com/errata/RHSA-2026:47049
Comment 13 errata-xmlrpc 2026-07-28 21:00:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:47201 https://access.redhat.com/errata/RHSA-2026:47201
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