Is CVE-2018-16866 in the CISA KEV catalog?

No. CVE-2018-16866 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-16866?

CVE-2018-16866 has a CVSS v3 base score of 3.3 (LOW).

What is the EPSS score for CVE-2018-16866?

CVE-2018-16866 has an EPSS score of 1.05% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-16866?

Upgrade systemd on debian 11 to 240-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-16866

LOW

3.3

CVSS v3

NVD

Description

An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.

CWE-125Out-of-bounds Read CWE-200Information Exposure

How to fix

Remediation Available

systemdDebian

Fixed in:240-1CVE-2018-16866

systemdUbuntu

Fixed in:229-4ubuntu21.15USN-3855-1

Fixed in:237-3ubuntu10.11USN-3855-1

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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.05%probability of exploitation in 30 days

60thpercentile

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

References

Patch1

bugzilla.redhat.com

Exploit1

qualys.com

Third-Party Advisory12

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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 2024-11-21.