| Version | Change log |
| PuTTY 0.82 Nov 28, 2024 |
Major refactoring of Unicode handling to allow the use of 'foreign' Unicode characters, i.e. outside the system's configured default character set / code page. Not yet complete, but the following things work: Windows console: usernames and passwords entered interactively into PSCP, PSFTP and Plink can use foreign characters. Windows command line: usernames, remote commands, and filenames entered via command-line options can use foreign characters. PuTTY's own terminal (on Windows and Unix): even if it's not configured into UTF-8 mode for the main session, interactive usernames and passwords can use foreign characters. Unicode version update: all character analysis is updated to Unicode 16.0.0. Unicode terminal rendering: national and regional flags are now understood by PuTTY's terminal emulator. (However, correct display of those flags will depend on fonts and operating system.) The Event Log mentions the local address and port number of the outgoing connection socket. Bracketed paste mode can now be turned off in the Terminal > Features panel. Unix Pageant: new --foreground mode for running as a subprocess. Bug fix: the 'border width' configuration option is now honoured even when the window is maximised. Bug fix: SHA-2 based RSA signatures are now sent with correct zero padding. Bug fix: terminal wrap mishandling caused occasional incorrect redraws in curses-based applications. Bug fix: Alt + function key in "Xterm 216+" mode sent a spurious extra escape character. |
| 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 |
