Is CVE-2018-16881 being actively exploited?

CVE-2018-16881 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-16881?

CVE-2018-16881 has a CVSS 3.1 base score of 7.5 (HIGH).

CVE-2018-16881

HIGH · CVSS 7.5EPSS 2.2%EU EUVD

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.

Key facts

CVSS score: 7.5 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-190
EPSS score: 2.2% (82th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-8671)
Published: January 25, 2019
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-8671 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

debian / debian linux
redhat / enterprise linux
redhat / enterprise linux desktop
redhat / enterprise linux for ibm z systems
redhat / enterprise linux for power big endian
redhat / enterprise linux for power little endian
redhat / enterprise linux for scientific computing
redhat / enterprise linux server
redhat / enterprise linux workstation
redhat / virtualization
redhat / virtualization host
redhat / virtualization manager
rsyslog / rsyslog

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Virtualization v4.3 - Red Hat, Inc. - Common Criteria OCSI/CERT/ATS/08/2020/RC - active

References

https://access.redhat.com/errata/RHBA-2019:2501(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:2110(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:2437(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:2439(Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881(Issue Tracking, Mitigation, Patch, Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html(Mailing List, Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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