UBUNTU-CVE-2020-14002

Advisory lineage Upstream: 1 Downstream: 0
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CVE-2020-14002
Published: 29 Jun 2020, 18:15
Last modified:24 Oct 2025, 04:48

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Jun 2020, 18:15
Published
Vulnerability first disclosed
24 Oct 2025, 04:48
Last Modified
Vulnerability information updated

Description

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Systems

  • ubuntu•putty

    all | all | all

References (5)