VDB

CVE-2026-25952

CVE-2026-25952 PUBLISHED CVSS 5.5 MEDIUM

FreeRDP has heap-use-after-free in xf_SetWindowMinMaxInfo

Reported by github_m · Published February 25, 2026

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_SetWindowMinMaxInfo` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` in `xf_rail_server_min_max_info` returns an unprotected pointer from the `railWindows` hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. Version 3.23.0 fixes the issue.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
freerdp-develerrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10, 2.11.7-9.el8
freerdperrata.rockylinux.org2.11.7-7.el9, 2.11.7-1.el9
libwinpr-develerrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10, 2.11.7-9.el8
freerdp-develAmazon Linux2:2.11.7-1.amzn2.0.8
freerdp-libserrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10
freerdp-libs-debuginfoerrata.rockylinux.org2.11.7-7.el9, 2.11.7-1.el9
libwinpr-debuginfoerrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10
freerdp-debugsourceerrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10, 2.11.7-7.el9, 2.11.7-1.el9
freerdp-debuginfoerrata.rockylinux.org2.11.7-7.el9, 2.11.7-1.el9
freerdp-server-debuginfoerrata.rockylinux.org3.10.3-12.el10, 3.10.3-5.el10
libwinprAmazon Linux2:3.6.3-1.amzn2023.0.7

Risk scores

CVSS 4.0
5.5
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Affected products

VendorProductVersions
FreeRDPFreeRDP< 3.23.0
amazon:2freerdp-devel0
amazon:2023libwinpr0
FreeRDPFreeRDP0
amazon:2libwinpr-devel0
amazon:2023freerdp-server0
amazon:2023freerdp0
alpinefreerdp0
amazon:2023freerdp-libs0
amazon:2libwinpr0
amazon:2freerdp-libs0
amazon:2023freerdp-devel0
amazon:2023libwinpr-devel0
amazon:2freerdp0

Timeline

  • Feb 24, 2026 CVE Published
  • Feb 25, 2026 PoC Published (2 in total, the first dated here)
  • Feb 26, 2026 EPSS Score (30 in total, the first dated here)
  • Mar 22, 2026 Coalition ESS Score (2 in total, the first dated here)
  • Apr 2, 2026 Security Advisory (35 in total, the first dated here)
  • May 12, 2026 Distribution Patch (36 in total, the first dated here)

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln CVE-2026-25952
vulnetix vdb fixes CVE-2026-25952

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-25952/fixes/registry"

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References

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