High severity7.5OSV Advisory· Published Jan 19, 2026· Updated Jun 17, 2026
CVE-2026-23732
CVE-2026-23732
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts cbData/remaining length and never validates against the minimum size implied by cx/cy. A malicious server can trigger a client‑side global buffer overflow, causing a crash (DoS). Version 3.21.0 contains a patch for the issue.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
21- osv-coords18 versionspkg:apk/chainguard/freerdp-devpkg:apk/wolfi/freerdp-devpkg: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%2015.6pkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/freerdp2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 2.11.7-r9+ 17 more
- (no CPE)range: < 2.11.7-r9
- (no CPE)range: < 2.11.7-r9
- (no CPE)range: < 2:2.11.7-1.el9_7.5
- (no CPE)range: < 2:2.11.7-1.el9_7.5
- (no CPE)range: < 2:2.11.7-1.el9_7.5
- (no CPE)range: < 2:3.10.3-5.el10_1.5
- (no CPE)range: < 2:2.11.7-1.el9_7.5
- (no CPE)range: < 2:2.11.7-1.el9_7.5
- (no CPE)range: < 2.11.2-150600.4.12.1
- (no CPE)range: < 3.22.0-160000.1.1
- (no CPE)range: < 3.21.0-1.1
- (no CPE)range: < 2.11.7-6.1
- (no CPE)range: < 2.11.2-150600.4.12.1
- (no CPE)range: < 2.1.2-12.57.1
- (no CPE)range: < 2.1.2-12.57.1
- (no CPE)range: < 3.10.3-150700.3.3.1
- (no CPE)range: < 2.11.7-150700.3.8.1
- (no CPE)range: < 2.11.7-150700.3.8.1
Patches
Vulnerability mechanics
References
6- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qxp-j2fj-c3ppnvdExploitVendor Advisory
- github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/cache/glyph.cnvdProduct
- github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/codec/color.cnvdProduct
- github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/core/graphics.cnvdProduct
- github.com/FreeRDP/FreeRDP/blob/f96ee2a6dd02739325c2a4e36a14978b561f00ea/libfreerdp/core/orders.cnvdProduct
- github.com/FreeRDP/FreeRDP/releases/tag/3.21.0nvdRelease Notes
News mentions
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