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.
- Score
- 9.3 critical
- Published
- 2026-11-04
- Links
- NVD · cve.org · Report wrong data
Matched ports (1)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| net/freerdp | freerdp | 2.11.8_1 | unaddressed | vvd@FreeBSD.org |
Template for a VuXML entry
Check the version numbers before you commit this entry. Some ports share an entry in the CVE database with another port, such as sqlite2 and sqlite3. The version shown here may then be one that never existed for this port.
Ranges per package from the CVE rows that match this port, in pkg notation with the port's epoch and revision, every bound checked with pkg; one range per epoch the port actually had. make newentry in security/vuxml creates the vid.
<vuln vid="FIXME (make newentry)">
<topic>freerdp -- FIXME</topic>
<affects>
<package>
<name>freerdp</name>
<range><lt>3.32.2</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>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.</p>
</body>
</description>
<references>
<cvename>CVE-2026-121953</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-121953</url>
</references>
<dates>
<discovery>2026-11-04</discovery>
<entry>2026-11-04</entry>
</dates>
</vuln>