Fedora 43 Putty Important Fix for Security Issues 2026-61f53cc218
fedora
June 9, 2026
This is an update fixing several security related problems in putty.
Summary
Putty is a SSH, Telnet & Rlogin client - this time for Linux.
Update Information:
This is an update fixing several security related problems in putty.
Topics Covered
Change Log
* Mon May 25 2026 Jaroslav Škarvada
References
[ 1 ] Bug #2480724 - putty-0.84 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2480724
[ 2 ] Bug #2481658 - CVE-2026-48850 putty: double free vulnerability in RSA KEX code [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2481658
[ 3 ] Bug #2481659 - CVE-2026-48851 putty: TELNET session data is marked with trust sigils after authenticating to a proxy [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2481659
[ 4 ] Bug #2481662 - CVE-2026-48852 putty: assertion failure in ECDSA signature verification [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2481662
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-61f53cc218' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
important
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Critical
Name: putty
Product: Fedora 43
Version: 0.84
Release: 1.fc43
Summary: SSH, Telnet and Rlogin client
Topics Covered
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