CVE-2026-121962
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
64/100
Published: 2026-11-04
Modified: 2026-11-05
First seen: 2026-11-04
Status: active
Attack Surface
Network
Low Complexity
No Auth
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Passive
S:
X
AT:
None
VC:
None
VI:
High
VA:
High
Description
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.
Weakness Classification (1)
Affected Software (3)
References & Advisories (2)
vendor-advisory
third-party-advisory