The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).
Base Score: 4.3
Impact Score: 2.9
Exploitability Score: 8.6
Base Score: 5.9
Impact Score: 3.6
Exploitability Score: 2.2
cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:* versions from 0.68 to 0.73 (inclusive)
|138244||Fedora 31 : putty (2020-f4dba093f1)||Nessus||Fedora Local Security Checks|
|138235||Fedora 32 : putty (2020-35442ce9b7)||Nessus||Fedora Local Security Checks|
|137870||FreeBSD : PuTTY -- Release 0.74 fixes two security vulnerabilities (6190c0cd-b945-11ea-9401-2dcf562daa69)||Nessus||FreeBSD Local Security Checks|