High severity7.5NVD Advisory· Published Sep 15, 2026· Updated Sep 24, 2026
CVE-2026-91947
CVE-2026-91947
Description
FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences a channel pointer after releasing the synchronization lock. Authenticated clients can race AUDIN channel closure messages against DRDYNVC data parsing to trigger heap-use-after-free when accessing freed channel objects.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- osv-coords6 versionspkg:rpm/almalinux/freerdppkg:rpm/almalinux/freerdp-develpkg:rpm/almalinux/freerdp-libspkg:rpm/almalinux/freerdp-serverpkg:rpm/almalinux/libwinprpkg:rpm/almalinux/libwinpr-devel
< 2:3.10.3-12.el10_2.14+ 5 more
- (no CPE)range: < 2:3.10.3-12.el10_2.14
- (no CPE)range: < 2:3.10.3-12.el10_2.14
- (no CPE)range: < 2:3.10.3-12.el10_2.14
- (no CPE)range: < 2:3.10.3-12.el10_2.14
- (no CPE)range: < 2:3.10.3-12.el10_2.14
- (no CPE)range: < 2:3.10.3-12.el10_2.14
Patches
Vulnerability mechanics
References
2News mentions
1- FreeRDP: 20 Vulnerabilities Disclosed, Including Critical RDSTLS BypassVypr Intelligence · Sep 15, 2026