HomeCVE Intelligence › CVE-2026-64620
CVSS 9.1 CRITICAL Security Vulnerability

CVE-2026-64620: FreeRDP before 3.28.0 (affected <=3.27.1) contains a heap-based buffer overflow in crypto…

FreeRDP before 3.28.0 (affected out_length, so out-of-bounds bytes are written before the bounds check. On the server side, when a client selects RDP Standard Security, the encrypted client random is decrypted into a fi…

9.1CVSS Score
CRITICALSeverity
NOCISA KEV
0.6%EPSS Score
Security VulnerabilityImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-64620
VendorUnknown Vendor
Affected ProductUnknown Product
Vulnerability TypeSecurity Vulnerability
CVSS Score9.1 (CRITICAL)
EPSS Score0.6% probability of exploitation in the next 30 days
Actively Exploited❌ No known exploitation
Patch StatusPending Vendor Disclosure
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via sentinel_apex)

🔬 Technical Analysis

FreeRDP before 3.28.0 (affected out_length, so out-of-bounds bytes are written before the bounds check. On the server side, when a client selects RDP Standard Security, the encrypted client random is decrypted into a fixed 32-byte buffer. Because the server publishes its RSA publ... [Full analysis available on Pro]

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