Putty CVEs & Vulnerabilities
3 CVEs affecting Putty products, tracked from the National Vulnerability Database, with CVSS/EPSS scores and exploitation status.
3 CVEs→ All vendors
Most Affected Products
putty 3
CVE-2026-48852LOW
PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification.
26 May 2026
3.7
CVSS
CVE-2026-48851LOW
PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.
26 May 2026
3.1
CVSS
CVE-2026-48850MEDIUM
PuTTY 0.72 before 0.84 has a double free in RSA KEX.
26 May 2026
5.9
CVSS
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