Unrated severityOSV Advisory· Published Jan 14, 2026· Updated Feb 26, 2026
FreeRDP has a heap-buffer-overflow in audin_process_formats
CVE-2026-22852
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability is fixed in 3.20.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19- osv-coords17 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/freerdp2&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/freerdp2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg: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%20SP7
< 2:2.11.7-1.el9_7.5+ 16 more
- (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: < 2.11.7-bp160.2.1
- (no CPE)range: < 2.11.7-4.1
- (no CPE)range: < 2.11.2-150600.4.6.1
- (no CPE)range: < 3.22.0-160000.1.1
- (no CPE)range: < 3.20.2-1.1
- (no CPE)range: < 2.11.7-150700.3.3.1
- (no CPE)range: < 2.11.7-150700.3.3.1
- (no CPE)range: < 2.11.2-150600.4.6.1
- (no CPE)range: < 2.1.2-12.52.1
- (no CPE)range: < 2.1.2-12.52.1
- (no CPE)range: < 3.10.3-150700.3.3.1
Patches
Vulnerability mechanics
References
2- github.com/FreeRDP/FreeRDP/releases/tag/3.20.1mitrex_refsource_MISC
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9chc-g79v-4qq4mitrex_refsource_CONFIRM
News mentions
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