CVE-2026-121963
FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that allows malicious RDP servers to trigger freed callback access by closing the channel with queued audio PDUs. Attackers can send a training PDU then close the channel so the playback thread reads the freed callback in rdpsnd_virtual_channel_write, crashing the client.
- Score
- 8.2 high
- 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-2026-121963: FreeRDP before 3.32.2 contains a use-after-free
vulnerability in the asynchronous dynamic rdpsnd channel that
allows malicious RDP servers to trigger freed callback access by
closing the channel with queued audio PDUs. Attackers can send a
training PDU then close the channel so the playback thread reads
the freed callback in rdpsnd_virtual_channel_write, crashing the
client.</p>
</body>
</description>
<references>
<cvename>CVE-2026-121963</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-121963</url>
</references>
<dates>
<discovery>2026-11-04</discovery>
<entry>2026-11-04</entry>
</dates>
</vuln>