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CVE-2015-2157

11
FAUCET Score

CVE-2015-2157 describes a memory leakage vulnerability in PuTTY versions 0.51 through 0.63, affecting functions ssh2_load_userkey and ssh2_save_userkey. This flaw allows local users to potentially retrieve sensitive SSH-2 private key information from memory. With a CVSS score of 2.1, this is a low-severity vulnerability requiring local access and low attack complexity, primarily impacting confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
13.1CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 80th percentile among its peer group of 2,096 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.fedoraproject.org / pipermail/package-announce/2015-March/151790.html
lists.fedoraproject.org / pipermail/package-announce/2015-March/151839.html
lists.fedoraproject.org / pipermail/package-announce/2015-March/151933.html
lists.opensuse.org / opensuse-updates/2015-03/msg00032.html
chiark.greenend.org.uk / ~sgtatham/putty/changes.html
PatchVendor Advisory
chiark.greenend.org.uk / ~sgtatham/putty/wishlist/private-key-not-wiped-2.html
PatchVendor Advisory
debian.org / security/2015/dsa-3190
openwall.com / lists/oss-security/2015/02/28/4
openwall.com / lists/oss-security/2015/02/28/5
securityfocus.com / bid/72825