| Version | Change log |
| PuTTY 0.81 Apr 15, 2024 | Security fix for CVE-2024-31497: NIST P521 / ecdsa-sha2-nistp521 signatures are no longer generated with biased values of k. The previous bias compromises private keys. |
| PuTTY 0.80 Dec 18, 2023 |
Security fix: support for OpenSSH's new kex-strict protocol modification, addressing a vulnerability in some @openssh.com cipher and MAC modes, in particular ChaCha20+Poly1305. Bug fix: the MSI-installed version of putty.exe can now find its help file again. Bug fix: a server sending non-displaying terminal escape sequences such as ESC[0m now no longer resets the scrollback to the bottom of the window. |
| PuTTY 0.79 Aug 26, 2023 |
Terminal mouse tracking: support for mouse movements which are not drags. Terminal mouse tracking: support for horizontal scroll events (e.g. generated by trackpads). Backwards compatibility fix: certificate-based user authentication now works with OpenSSH 7.7 and earlier. Bug fix: in a session using the 'Raw' protocol, pressing ^D twice in the terminal window could cause an assertion failure. Bug fix: terminal output could hang if a resize control sequence was sent by the server (and was not disabled in the Features panel) but PuTTY's window was set to non-resizable in the Window panel. Bug fix: GTK PuTTY could fail an assertion if a resize control sequence was sent by the server while the window was docked to one half of the screen in KDE. Bug fix: GTK PuTTY could fail an assertion if you tried to change the font size while the window was maximised. |
| PuTTY 0.78 Oct 30, 2022 | |
| PuTTY 0.77 May 30, 2022 |
