critical
CVE-2026-25997
freerdp: FreeRDP: Denial of service via heap use-after-free during auto-reconnect
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Amazon (high), Red Hat (medium), Oracle (medium), Rocky Linux (medium), Ubuntu (medium).
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_clipboard_format_equal` reads freed `lastSentFormats` memory because `xf_clipboard_formats_free` (called from the cliprdr channel thread during auto-reconnect) frees the array while the X11 event thread concurrently iterates it in `xf_clipboard_changed`, triggering a heap use after free. Version 3.23.0 fixes the issue.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.23 | freerdp | 3.23.0-r0 |
| alpine 3.24 | freerdp | 3.23.0-r0 |
| alpine edge | freerdp | 3.23.0-r0 |
| amazon linux 2 | freerdp, freerdp-debuginfo, freerdp-devel and 3 more | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2023 | freerdp, freerdp-debuginfo, freerdp-debugsource and 8 more | 2:3.6.3-1.amzn2023.0.7 |
| debian 11 | freerdp2 | no fix listed |
| debian 12 | freerdp2 | no fix listed |
| debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| debian 14 | freerdp3 | 3.23.0+dfsg-1 |
| echo | freerdp2, freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| rapidfort alma 8 | freerdp, freerdp-devel, freerdp-libs and 2 more | no fix listed |
| rapidfort alpine 3.20 | freerdp | 3.23.0-r0 |
Show all 72 entries from 24 sources
| Source | Package | Fixed in |
|---|---|---|
| alpine 3.23 | freerdp | 3.23.0-r0 |
| alpine 3.24 | freerdp | 3.23.0-r0 |
| alpine edge | freerdp | 3.23.0-r0 |
| amazon linux 2 | freerdp | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2 | freerdp-debuginfo | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.8 |
| amazon linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-debuginfo | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-debugsource | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-libs-debuginfo | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | freerdp-server-debuginfo | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | libwinpr-debuginfo | 2:3.6.3-1.amzn2023.0.7 |
| amazon linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.7 |
| debian 11 | freerdp2 | no fix listed |
| debian 12 | freerdp2 | no fix listed |
| debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| debian 14 | freerdp3 | 3.23.0+dfsg-1 |
| echo | freerdp2 | no fix listed |
| echo | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| rapidfort alma 8 | freerdp | no fix listed |
| rapidfort alma 8 | freerdp-devel | no fix listed |
| rapidfort alma 8 | freerdp-libs | no fix listed |
| rapidfort alma 8 | libwinpr | no fix listed |
| rapidfort alma 8 | libwinpr-devel | no fix listed |
| rapidfort alpine 3.20 | freerdp | 3.23.0-r0 |
| rapidfort alpine 3.21 | freerdp | 3.23.0-r0 |
| rapidfort alpine 3.22 | freerdp | 3.23.0-r0 |
| rapidfort amazon linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort amazon linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort amazon linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort amazon linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort amazon linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort amazon linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.7 |
| rapidfort debian 12 | freerdp2 | no fix listed |
| rapidfort debian 12 | freerdp3 | 0:3.15.0+dfsg-2.1+deb13u1, 0:3.23.0+dfsg-1 |
| rapidfort debian 13 | freerdp2 | no fix listed |
| rapidfort debian 13 | freerdp3 | 0:3.15.0+dfsg-2.1+deb13u1, 0:3.23.0+dfsg-1 |
| rapidfort fedora 43 | freerdp | 2:3.23.0-1.fc43 |
| rapidfort fedora 43 | freerdp-devel | 2:3.23.0-1.fc43 |
| rapidfort fedora 43 | freerdp-libs | 2:3.23.0-1.fc43 |
| rapidfort fedora 43 | freerdp-server | 2:3.23.0-1.fc43 |
| rapidfort fedora 43 | libwinpr | 2:3.23.0-1.fc43 |
| rapidfort fedora 43 | libwinpr-devel | 2:3.23.0-1.fc43 |
| rapidfort Oracle Linux 10 | freerdp | 2:3.10.3-12.el10_2.6 |
| rapidfort Oracle Linux 10 | freerdp-devel | 2:3.10.3-12.el10_2.6 |
| rapidfort Oracle Linux 10 | freerdp-libs | 2:3.10.3-12.el10_2.6 |
| rapidfort Oracle Linux 10 | freerdp-server | 2:3.10.3-12.el10_2.6 |
| rapidfort Oracle Linux 10 | libwinpr | 2:3.10.3-12.el10_2.6 |
| rapidfort Oracle Linux 10 | libwinpr-devel | 2:3.10.3-12.el10_2.6 |
| rapidfort rocky 8 | freerdp | no fix listed |
| rapidfort rocky 8 | freerdp-devel | no fix listed |
| rapidfort rocky 8 | freerdp-libs | no fix listed |
| rapidfort rocky 8 | libwinpr | no fix listed |
| rapidfort rocky 8 | libwinpr-devel | no fix listed |
| Red Hat | freerdp | no fix listed |
| Red Hat | freerdp-devel | no fix listed |
| Red Hat | freerdp-libs | no fix listed |
| Red Hat | freerdp-plugins | no fix listed |
| Red Hat | libwinpr | no fix listed |
| Red Hat | libwinpr-devel | no fix listed |
| rocky 10 | freerdp | 2:3.10.3-12.el10_2.5 |
| rocky 10 | freerdp-libs | 2:3.10.3-12.el10_2.5 |
| rocky 10 | libwinpr | 2:3.10.3-12.el10_2.5 |
| ubuntu 24.04 | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 |
| ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 |
References
- https://access.redhat.com/errata/RHSA-2026:19142
- https://access.redhat.com/security/cve/CVE-2026-25997
- https://bugzilla.redhat.com/show_bug.cgi?id=2442764
- https://bugzilla.redhat.com/show_bug.cgi?id=2442768
- https://bugzilla.redhat.com/show_bug.cgi?id=2442782
- https://bugzilla.redhat.com/show_bug.cgi?id=2447379
- https://bugzilla.redhat.com/show_bug.cgi?id=2447383
- https://bugzilla.redhat.com/show_bug.cgi?id=2447385
All 38 references
- https://bugzilla.redhat.com/show_bug.cgi?id=2447386
- https://bugzilla.redhat.com/show_bug.cgi?id=2453217
- https://bugzilla.redhat.com/show_bug.cgi?id=2453218
- https://bugzilla.redhat.com/show_bug.cgi?id=2453226
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-25952
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-25997
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26986
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-29775
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31883
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31884
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31885
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33982
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33985
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33987
- https://errata.rockylinux.org/RLSA-2026:19142
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L1884
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L1889
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L265
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L616
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L831
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L851-L855
- https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_cliprdr.c#L868-L875
- https://github.com/FreeRDP/FreeRDP/commit/58409406afe7c2a8a71ed2dc8e22075be4f41c0c
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q5j3-m6jf-3jq4
- https://linux.oracle.com/cve/CVE-2026-25997.html
- https://linux.oracle.com/errata/ELSA-2026-19142.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-25997
- https://ubuntu.com/security/notices/USN-8105-1
- https://www.cve.org/CVERecord?id=CVE-2026-25997