7.2
High
CVE-2026-121962 FreeRDP before 3.32.2 Heap Buffer Overflow via Early User Authorization Read
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.
CVSS 4.0 detail
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NExploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- None
- Interaction
- Passive
- Confidentiality
- None
- Integrity
- High
- Availability
- High
- Confidentiality of other systems
- None
- Integrity of other systems
- None
- Availability of other systems
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| FreeRDP 3.32 | earliest → < 3.32.2 | 3.32.2 |
References
Timeline
- Published
- Last modified
Other CVEs of FreeRDP
The 324 CVEs of FreeRDP →
CVE-2026-121964
FreeRDP before 3.32.2 Heap Buffer Overflow via rpc_client_recv_fragment
8.7
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CVE-2026-121963
FreeRDP before 3.32.2 Use-After-Free via Dynamic rdpsnd Channel Close
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CVE-2026-121961
FreeRDP before 3.32.2 Use-After-Free via DRDYNVC Tracker Race
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CVE-2026-121960
FreeRDP before 3.32.2 Unauthenticated Denial of Service via CredSSP TSRequest
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