PuTTY vulnerability vuln-p521-bias Home | FAQ | Feedback | Licence | Updates | Mirrors | Keys | Links | Team Download: Stable · Snapshot | Docs | Changes | Wishlist summary: NIST P521 private keys are exposed by biased signature generation class: vulnerability: This is a security vulnerability. priority: high: This should be fixed in the next release. absent-in: 0.67 present-in: 0.68 0.69 0.70 0.7