CVE-2026-22855
CRITICAL
2026-01-14
[email protected]
9.1
CVSS 3.1
Share
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Lifecycle Timeline
4
Patch Released
Apr 09, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 20, 2026 - 18:36 vuln.today
Public exploit code
CVE Published
Jan 14, 2026 - 18:16 nvd
CRITICAL 9.1
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. This vulnerability is fixed in 3.20.1.
Analysis
FreeRDP smartcard SetAttrib heap OOB read when attribute length mismatches NDR buffer. Fixed in 3.20.1.
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.
Sign in for detailed remediation steps.
Priority Score
66
Low
Medium
High
Critical
KEV: 0
EPSS: +0.1
CVSS: +46
POC: +20
Vendor Status
Share
External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).