PuTTY: a free SSH and Telnet client

    Home | [1]FAQ | [2]Feedback | [3]Licence | [4]Updates | [5]Mirrors | [6]Keys |
                                  [7]Links | [8]Team
      Download: [9]Stable · [10]Snapshot | [11]Docs | [12]Changes | [13]Wishlist

   PuTTY is a free implementation of SSH and Telnet for Windows and Unix platforms,
   along with an xterm terminal emulator. It is written and maintained primarily by
   [14]Simon Tatham.

   The latest version is 0.81. [15]Download it here.

   LEGAL WARNING: Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries where
   encryption is outlawed. We believe it is legal to use PuTTY, PSCP, PSFTP and
   Plink in England and Wales and in many other countries, but we are not lawyers,
   and so if in doubt you should seek legal advice before downloading it. You may
   find useful information at [16]cryptolaw.org, which collects information on
   cryptography laws in many countries, but we can't vouch for its correctness.

   Use of the Telnet-only binary (PuTTYtel) is unrestricted by any cryptography
   laws.

Latest news

   2024-04-15 PuTTY 0.81 released

   PuTTY 0.81, released today, fixes a critical vulnerability [17]CVE-2024-31497 in
   the use of 521-bit ECDSA keys (ecdsa-sha2-nistp521). If you have used a 521-bit
   ECDSA private key with any previous version of PuTTY, consider the private key
   compromised: remove the public key from authorized_keys files, and generate a new
   key pair.

   However, this only affects that one algorithm and key size. No other size of
   ECDSA key is affected, and no other key type is affected.

   2023-12-18 PuTTY 0.80 released

   PuTTY 0.80, released today, includes a fix for the [18]Terrapin vulnerability in
   some SSH protocol extensions (aka CVE-2023-48795). The issue also needs patching
   in the server.

   2023-08-26 PuTTY 0.79 released

   PuTTY 0.79, released today, is mostly a bug fix release, with only minor new
   features in SSH and terminal mouse handling.

   The most important bug fix is that we've restored the Windows 'install scope' to
   the way it was in 0.77 and earlier, reverting the security workaround we had to
   put into 0.78. This means the 0.79 Windows installer will not uninstall 0.78
   automatically, so we recommend uninstalling 0.78 by hand first, if you have it
   installed. As before, if you've ended up with both versions installed,
   uninstalling them both and then running the new installer will put everything
   right.

   2023-07-31 GPG key rollover

   We've generated a fresh set of GPG keys for signing PuTTY release and snapshot
   builds, since the old ones were due to expire. We will begin signing snapshots
   with the new snapshot key, and future releases with the new release key. For
   continuity, the new master key is signed with the old master key. See the
   [19]keys page for more information.

Site map

     * [20]Licence conditions under which you may use PuTTY.
     * [21]The FAQ.
     * [22]The documentation.
     * Download PuTTY:
          + [23]latest release 0.81
          + [24]development snapshots
     * Subscribe to the [25]PuTTY-announce mailing list to be notified of new
       releases.
     * [26]Feedback and bug reporting: contact address and guidelines. Please read
       the guidelines before sending us mail; we get a very large amount of mail and
       it will help us answer you more quickly.
     * [27]Changes in recent releases.
     * [28]Wish list and list of known bugs.
     * [29]Links to related software and specifications elsewhere.
     * A page about the PuTTY [30]team members.
     ____________________________________________________________________________

   If you want to comment on this web site, see the [31]Feedback page.
   (last modified on Mon Apr 15 20:02:39 2024)

References

   1. https://www.chiark.greenend.org.uk/~sgtatham/putty/faq.html
   2. https://www.chiark.greenend.org.uk/~sgtatham/putty/feedback.html
   3. https://www.chiark.greenend.org.uk/~sgtatham/putty/licence.html
   4. https://www.chiark.greenend.org.uk/~sgtatham/putty/maillist.html
   5. https://www.chiark.greenend.org.uk/~sgtatham/putty/mirrors.html
   6. https://www.chiark.greenend.org.uk/~sgtatham/putty/keys.html
   7. https://www.chiark.greenend.org.uk/~sgtatham/putty/links.html
   8. https://www.chiark.greenend.org.uk/~sgtatham/putty/team.html
   9. https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
  10. https://www.chiark.greenend.org.uk/~sgtatham/putty/snapshot.html
  11. https://www.chiark.greenend.org.uk/~sgtatham/putty/docs.html
  12. https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
  13. https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/
  14. https://www.chiark.greenend.org.uk/~sgtatham/
  15. https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
  16. http://www.cryptolaw.org/
  17. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-31497
  18. https://terrapin-attack.com/
  19. https://www.chiark.greenend.org.uk/~sgtatham/putty/keys.html
  20. https://www.chiark.greenend.org.uk/~sgtatham/putty/licence.html
  21. https://www.chiark.greenend.org.uk/~sgtatham/putty/faq.html
  22. https://www.chiark.greenend.org.uk/~sgtatham/putty/docs.html
  23. https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
  24. https://www.chiark.greenend.org.uk/~sgtatham/putty/snapshot.html
  25. https://www.chiark.greenend.org.uk/~sgtatham/putty/maillist.html
  26. https://www.chiark.greenend.org.uk/~sgtatham/putty/feedback.html
  27. https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
  28. https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/
  29. https://www.chiark.greenend.org.uk/~sgtatham/putty/links.html
  30. https://www.chiark.greenend.org.uk/~sgtatham/putty/team.html
  31. https://www.chiark.greenend.org.uk/~sgtatham/putty/feedback.html