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CVE-2017-13730

23
FAUCET Score

CVE-2017-13730 describes an illegal address access vulnerability within the _nc_read_entry_source() function in ncurses 6.0, specifically in progs/tic.c. This flaw could be exploited remotely to cause a denial of service. With a CVSS score of 6.5 (Medium), it requires user interaction and has a high impact on availability, but no impact on confidentiality or integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

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
2.91%
Probability of exploitation in next 30 days
EPSS Percentile
85.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0291 is in the 93rd percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Vendor Patches (3)

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-2017-13730Low

ncurses: Illegal address access in the function _nc_read_entry_source()

Aug 23, 2017

References

bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party AdvisoryVDB Entry
lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
security.gentoo.org / glsa/201804-13