CVE-2018-1054 [High] | Denial of Service in 389 Directory Server

CVE-2018-1054 is rated High Risk (66/100): CVSS High severity, with high exploitation likelihood (EPSS 14.72%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.95% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-22	11.77%	14.72%	+2.95%
2	2026-03-15	9.63%	11.77%	+2.15%
3	2025-12-30	—	9.63%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-22

11.77%

14.72%

+2.95%

2026-03-15

9.63%

11.77%

+2.15%

2025-12-30

—

9.63%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:N/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.0

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2018-1054

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2018-1054 not yet assigned priority: Debian including 1 source packages (389-ds-base), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4.	https://security-tracker.debian.org/tracker/CVE-2018-1054
`redhat`	high	—	https://access.redhat.com/security/cve/CVE-2018-1054
`ubuntu`	medium	CVE-2018-1054 medium priority: Ubuntu including 1 source packages (389-ds-base), 20 status rows across 20 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 16, ignored 2, DNE 1, needed 1.	https://ubuntu.com/security/CVE-2018-1054

Affected software / configurations for CVE-2018-1054

Vendor	Product	Version	Raw CPE
fedoraproject	389_directory_server	<= 1.4.0.6	cpe:2.3:a:fedoraproject:389_directory_server::::::::
redhat	enterprise_linux_desktop	6.0	cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::*
redhat	enterprise_linux_desktop	7.0	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
redhat	enterprise_linux_server	6.0	cpe:2.3:o:redhat:enterprise_linux_server:6.0:::::::*
redhat	enterprise_linux_server	7.0	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
redhat	enterprise_linux_server	7.4	cpe:2.3:o:redhat:enterprise_linux_server:7.4:::::::*
redhat	enterprise_linux_workstation	6.0	cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:::::::*
redhat	enterprise_linux_workstation	7.0	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*

References for CVE-2018-1054

URL	Tags
http://www.securityfocus.com/bid/103228	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0414	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0515	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1537314	Issue Tracking Patch
https://lists.debian.org/debian-lts-announce/2018/07/msg00018.html
https://pagure.io/389-ds-base/issue/49545	Vendor Advisory

URL

CVE-2018-1054

Exploit prediction scoring system (EPSS) score for CVE-2018-1054

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1054

Weakness enumeration for CVE-2018-1054

OS Trackers for CVE-2018-1054

Affected software / configurations for CVE-2018-1054

References for CVE-2018-1054