Is CVE-2015-2157 actively exploited?

CVE-2015-2157 has no public evidence of in-the-wild exploitation as of 2025-04-12.

What is the CVSS score for CVE-2015-2157?

CVE-2015-2157 has a CVSS score of 2.1 (UNKNOWN severity). Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N.

How do I patch CVE-2015-2157?

Patch guidance is available from debian security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2015-2157.

CVE-2015-2157 - remediation guidance & executive summary

Q: Which products are affected by CVE-2015-2157?

19 products: debian debian linux, fedoraproject fedora, fedoraproject fedora, opensuse opensuse, opensuse opensuse, and 14 more.

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.

CVSS Metrics

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector: local
Access Cmplx: low
Auth: none
Confidentiality: partial
Integrity: none
Availability: none
Weaknesses: CWE-200 · Information Disclosure

Metadata

Primary Vendor: DEBIAN
Published: 3/27/2015
Last Modified: 4/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

debian : debian_linuxfedoraproject : fedorafedoraproject : fedoraopensuse : opensuseopensuse : opensuseputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttyputty : puttysimon_tatham : putty

Remediation Guidance

Executive Summary

Cite this page

CVE-2015-2157. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2015-2157

View on NIST NVD

CVE-2015-2157 vulnerability