Is CVE-2018-15687 in the CISA KEV catalog?

No. CVE-2018-15687 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-15687?

CVE-2018-15687 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2018-15687?

CVE-2018-15687 has an EPSS score of 1.06% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-15687?

Upgrade systemd on debian 11 to 239-11 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-15687

HIGH

7.0

CVSS v3

NVD

Description

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

CWE-362Race Condition

How to fix

Remediation Available

systemdDebian

Fixed in:239-11CVE-2018-15687

systemdUbuntu

Fixed in:229-4ubuntu21.8USN-3816-1

Fixed in:237-3ubuntu10.6USN-3816-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.06%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch1

github.com

Exploit1

exploit-db.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-09.