CVE-2015-2157 Information disclosure in n/a

What is CVE-2015-2157?

CVE-2015-2157 is a low-severity vulnerability in Debian Debian Linux, published on 27 Mar 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-200

Which versions are affected by CVE-2015-2157?

It affects 5 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Opensuse Opensuse, Putty Putty, Simon Tatham Putty.

How do I fix CVE-2015-2157?

Upgrade to a fixed version.

Is CVE-2015-2157 being exploited?

There is no known exploitation of CVE-2015-2157 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-2157, DLA-173-1, DSA-3190-1, GHSA-cmw5-crx2-gx7r, MGASA-2015-0098, UBUNTU-CVE-2015-2157.