CVE-2026-121396

freerdp3: FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_rea...

CVE-2026-121396 is fixed in freerdp3 on 1 platform by DEBIAN-CVE-2026-121396 (version 3.32.2+dfsg-1), released November 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0032

24th percentile

FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_read_auth_verifier triggered by malformed RTS padding. Attackers controlling an RD Gateway can send a crafted RPC-over-HTTP RTS PDU with inconsistent authentication padding to abort the connecting client process.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
freerdp3 · Debian 14	3.32.2+dfsg-1	DEBIAN-CVE-2026-121396	Nov 4, 2026

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