Critical severity9.8OSV Advisory· Published Jan 14, 2026· Updated Jul 15, 2026
CVE-2026-22853
CVE-2026-22853
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
13- osv-coords10 versionspkg:rpm/almalinux/freerdppkg:rpm/almalinux/freerdp-develpkg:rpm/almalinux/freerdp-libspkg:rpm/almalinux/freerdp-serverpkg:rpm/almalinux/libwinprpkg:rpm/almalinux/libwinpr-develpkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 2:3.10.3-5.el10_1.2+ 9 more
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 2:3.10.3-5.el10_1.2
- (no CPE)range: < 3.22.0-160000.1.1
- (no CPE)range: < 3.20.2-1.1
- (no CPE)range: < 3.10.3-150700.3.3.1
- (no CPE)range: < 3.10.3-150700.3.3.1
Patches
Vulnerability mechanics
References
8- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47v9-p4gp-w5chnvdExploitVendor Advisory
- github.com/FreeRDP/FreeRDP/releases/tag/3.20.1nvdRelease Notes
- access.redhat.com/errata/RHSA-2026:19033nvd
- access.redhat.com/errata/RHSA-2026:3068nvd
- access.redhat.com/errata/RHSA-2026:4121nvd
- access.redhat.com/security/cve/CVE-2026-22853nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22853.jsonnvd
News mentions
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