Download PuTTY: release 0.51

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This page contains download links for PuTTY release 0.51.

0.51, released on 2000-12-14, is not the latest release. See the Latest Release page for the most up-to-date release (currently 0.81).

Past releases of PuTTY are versions we thought were reasonably likely to work well, at the time they were released. However, later releases will almost always have fixed bugs and/or added new features. If you have a problem with this release, please try the latest release, to see if the problem has already been fixed.

SECURITY WARNING

This release has known security vulnerabilities. Consider using a later release instead, such as the latest version, 0.81.

The known vulnerabilities in this release are:

private-key-not-wiped (fixed in release 0.63)
private-key-not-wiped-2 (fixed in release 0.64)
vuln-agent-fwd-overflow (fixed in release 0.68)
vuln-auth-prompt-spoofing (fixed in release 0.71)
vuln-bignum-division-by-zero (fixed in release 0.63)
vuln-indirect-dll-hijack (fixed in release 0.68)
vuln-indirect-dll-hijack-2 (fixed in release 0.69)
vuln-indirect-dll-hijack-3 (fixed in release 0.70)
vuln-modmul (fixed in release 0.63)
vuln-modpow (fixed in release 0.55)
vuln-passwd-memdump (fixed in release 0.54)
vuln-pscp-sink-sscanf (fixed in release 0.67)
vuln-rng-reuse (fixed in release 0.71)
vuln-sftp-readdir (fixed in release 0.57)
vuln-sftp-string (fixed in release 0.57)
vuln-signature-stringlen (fixed in release 0.63)
vuln-ssh1-buffer-length-underflow (fixed in release 0.72)
vuln-ssh1-kex (fixed in release 0.55)
vuln-ssh1-short-rsa-keys (fixed in release 0.72)
vuln-sshredder (fixed in release 0.53b)
vuln-terminal-dos-one-column-cjk (fixed in release 0.71)
vuln-terrapin (fixed in release 0.80)
vuln-win-exclusiveaddruse (fixed in release 0.73)
vuln-win-pageant-client-missing-length-check (fixed in release 0.72)
vuln-windows-remote-title-dos (fixed in release 0.75)

Binary files

putty.exe (the SSH and Telnet client itself)

x86: putty.exe

Alpha: putty-alpha.exe

pscp.exe (an SCP client, i.e. command-line secure file copy)

x86: pscp.exe

Alpha: pscp-alpha.exe

puttytel.exe (a Telnet-only client)

x86: puttytel.exe

Alpha: puttytel-alpha.exe

plink.exe (a command-line interface to the PuTTY back ends)

x86: plink.exe

Alpha: plink-alpha.exe

pageant.exe (an SSH authentication agent for PuTTY, PSCP, PSFTP, and Plink)

x86: pageant.exe

Alpha: pageant-alpha.exe

puttygen.exe (a RSA and DSA key generation utility)

x86: puttygen.exe

Alpha: puttygen-alpha.exe

Source code

Windows source archive

.zip: putty.zip

git repository

Clone: https://git.tartarus.org/simon/putty.git

gitweb: main | 0.51 release tag

Checksum files

Cryptographic checksums for all the above files

MD5: md5sums

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(last modified on Mon Nov 4 00:42:54 2024)