CRITICALCVSS v3.1 9.8Vulnerability
CVE-2026-121953
FreeRDP before 3.32.2 has a use-after-free in the client's rdpgfx dynamic virtual channel: a duplicate-name channel with a new ChannelId overwrites the listener's single callback slot, which rdpgfx_on_close frees without clearing. A malicious RDP server can open and close such a channel, then send a PDU on the original channel to crash the client or potentially execute code.
Properties
- Severity
- CRITICAL
- Nvd fetched at
- 2026-11-04T17:37:42.865599+00:00
- Cvss score
- 9.8
- Cvss severity
- CRITICAL
- Retrieved at
- 2026-11-04T17:38:51+00:00
- Score
- 9.8
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-121953
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-04T17:38:51+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-11-04T16:17:47.717
- Last modified
- 2026-11-04T16:17:47.837
Related Entities (1)
HAS_WEAKNESS (1)
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