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CVE-2017-13734

20
FAUCET Score

CVE-2017-13734 describes an illegal address access vulnerability within the _nc_safe_strcat function in ncurses 6.0, which could lead to a remote denial of service. This medium-severity vulnerability (CVSS 6.5) requires user interaction and has a low attack complexity, impacting the availability of affected systems. There is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:a:invisible-island:ncurses:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 90th percentile among its peer group of 26,221 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, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ncurses
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ncurses
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ncurses

Vendor Advisories (1)

redhatCVE-2017-13734Low

ncurses: Illegal address access in the function _nc_safe_strcat

Aug 23, 2017

References

bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingPatchThird Party AdvisoryVDB Entry
security.gentoo.org / glsa/201804-13