CVE-2026-121962
FreeRDP before 3.32.2 contains a heap buffer overflow in transport_default_read_pdu when handling partial Early User Authorization reads during PROTOCOL_HYBRID_EX CredSSP. A malicious RDP server can split the four-byte EUA result into short reads that advance the stream pointer beyond the 16 KiB allocation, causing an out-of-bounds write and client denial of service.
- Score
- 7.2 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-2026-121962: FreeRDP before 3.32.2 contains a heap buffer overflow
in transport_default_read_pdu when handling partial Early User
Authorization reads during PROTOCOL_HYBRID_EX CredSSP. A malicious
RDP server can split the four-byte EUA result into short reads that
advance the stream pointer beyond the 16 KiB allocation, causing an
out-of-bounds write and client denial of service.</p>
</body>
</description>
<references>
<cvename>CVE-2026-121962</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-121962</url>
</references>
<dates>
<discovery>2026-11-04</discovery>
<entry>2026-11-04</entry>
</dates>
</vuln>