CVE-2026-121957
FreeRDP before 3.32.2 contains a use-after-free vulnerability that allows malicious RDP servers to corrupt client memory by racing the RDPGFX ResetGraphics handler against the planar bitmap decoder. Attackers can send ResetGraphics while concurrently sending compressed bitmaps of 32 bpp or more to trigger heap use-after-free or out-of-bounds read/write on shared planar buffers.
- Score
- 8.7 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-2026-121957: FreeRDP before 3.32.2 contains a use-after-free
vulnerability that allows malicious RDP servers to corrupt client
memory by racing the RDPGFX ResetGraphics handler against the
planar bitmap decoder. Attackers can send ResetGraphics while
concurrently sending compressed bitmaps of 32 bpp or more to
trigger heap use-after-free or out-of-bounds read/write on shared
planar buffers.</p>
</body>
</description>
<references>
<cvename>CVE-2026-121957</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-121957</url>
</references>
<dates>
<discovery>2026-11-04</discovery>
<entry>2026-11-04</entry>
</dates>
</vuln>