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Vulnerability record · CVE-2018-16881 · published 25 January 2019

CVE-2018-16881: Rsyslog integer overflow vulnerability

Rsyslog · Rsyslog

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.

7.5 CVSS 3.1 High EPSS 2.2% · top 17.9% CWE-190 · Integer overflow
7.5CVSS 3.1 base score, v2 5.0
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

12 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 TrackingMitigationPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html Mailing ListThird Party Advisory
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 TrackingMitigationPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-16881), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.