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CVE-2018-14638

25
FAUCET Score

CVE-2018-14638 describes a denial-of-service vulnerability in 389-ds-base versions prior to 1.3.8.4-13, affecting Fedora Project and Red Hat products. This flaw allows a remote attacker to crash the ns-slapd process by unexpectedly terminating persistent search connections, leading to a complete service outage. With a CVSS score of 7.5 (High), it has a low attack complexity and requires no user interaction or privileges. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.8.4CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:*:*:*:*:*:*:*:*
7.6CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_aus:7.6:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
7.5CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.65%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0265 is in the 72nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: 389-ds-base-0:1.3.7.5-28.el7_5
View patch
redhatworkaround availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: 389-ds-base

Vendor Advisories (1)

redhatCVE-2018-14638Moderate

389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly

Aug 30, 2018

References

access.redhat.com / errata/RHSA-2018:2757
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationThird Party Advisory
pagure.io / 389-ds-base/c/78fc627accacfa4061ce48977e22301f81ea8d73
Issue TrackingMitigationThird Party Advisory