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Vulnerabilities / CVE-2026-22853

critical

CVE-2026-22853

freerdp: FreeRDP heap-buffer-overflow

Published Modified CWE 787
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 Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Oracle (high), Rocky Linux (high), Ubuntu (medium).

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.23freerdp3.22.0-r0
debian 11freerdp2no fix listed
debian 12freerdp2no fix listed
debian 13freerdp33.15.0+dfsg-2.1+deb13u1
debian 14freerdp33.20.2+dfsg-1
echofreerdp2, freerdp33.15.0+dfsg-2.1+deb13u1
rapidfort alpine 3.20freerdp3.20.2-r0
rapidfort alpine 3.21freerdp3.20.2-r0
rapidfort alpine 3.22freerdp3.20.2-r0
rapidfort debian 12freerdp2, freerdp30:3.15.0+dfsg-2.1+deb13u1, 0:3.20.2+dfsg-1
rapidfort debian 13freerdp2, freerdp30:3.15.0+dfsg-2.1+deb13u1, 0:3.20.2+dfsg-1
rapidfort fedora 43freerdp, freerdp-devel, freerdp-libs and 3 more2:3.20.2-1.fc43
Show all 34 entries from 16 sources
SourcePackageFixed in
alpine 3.23freerdp3.22.0-r0
debian 11freerdp2no fix listed
debian 12freerdp2no fix listed
debian 13freerdp33.15.0+dfsg-2.1+deb13u1
debian 14freerdp33.20.2+dfsg-1
echofreerdp2no fix listed
echofreerdp33.15.0+dfsg-2.1+deb13u1
rapidfort alpine 3.20freerdp3.20.2-r0
rapidfort alpine 3.21freerdp3.20.2-r0
rapidfort alpine 3.22freerdp3.20.2-r0
rapidfort debian 12freerdp2no fix listed
rapidfort debian 12freerdp30:3.15.0+dfsg-2.1+deb13u1, 0:3.20.2+dfsg-1
rapidfort debian 13freerdp2no fix listed
rapidfort debian 13freerdp30:3.15.0+dfsg-2.1+deb13u1, 0:3.20.2+dfsg-1
rapidfort fedora 43freerdp2:3.20.2-1.fc43
rapidfort fedora 43freerdp-devel2:3.20.2-1.fc43
rapidfort fedora 43freerdp-libs2:3.20.2-1.fc43
rapidfort fedora 43freerdp-server2:3.20.2-1.fc43
rapidfort fedora 43libwinpr2:3.20.2-1.fc43
rapidfort fedora 43libwinpr-devel2:3.20.2-1.fc43
rapidfort Oracle Linux 10freerdp2:3.10.3-5.el10_1.2
rapidfort Oracle Linux 10freerdp-devel2:3.10.3-5.el10_1.2
rapidfort Oracle Linux 10freerdp-libs2:3.10.3-5.el10_1.2
rapidfort Oracle Linux 10freerdp-server2:3.10.3-5.el10_1.2
rapidfort Oracle Linux 10libwinpr2:3.10.3-5.el10_1.2
rapidfort Oracle Linux 10libwinpr-devel2:3.10.3-5.el10_1.2
Red Hatfreerdpno fix listed
Red Hatfreerdp-develno fix listed
Red Hatfreerdp-libsno fix listed
Red Hatfreerdp-pluginsno fix listed
rocky 10freerdp2:3.10.3-5.el10_1.2
rocky 10freerdp-libs2:3.10.3-5.el10_1.2
rocky 10libwinpr2:3.10.3-5.el10_1.2
ubuntu 25.10freerdp33.16.0+dfsg-2ubuntu0.3

References

All 24 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.