The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.
CVSS Details
- CVSS 3.1 Base Score: 3.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade putty | Aug 30, 2017 | Mar 27, 2015 |
| Debian | — | Upgrade putty | Jul 30, 2024 | Mar 27, 2015 |
| Freebsd | — | Upgrade putty | Dec 10, 2025 | Mar 5, 2015 |
| Suse | — | Upgrade puttyUpgrade putty-debugsourceUpgrade putty-debuginfo | Dec 18, 2015 | Mar 11, 2015 |
| Ubuntu | — | Upgrade putty | Nov 19, 2024 | Mar 27, 2015 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub