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Vulnerability record · CVE-2019-17040 · published 30 September 2019

CVE-2019-17040: Rsyslog out-of-bounds read vulnerability

Rsyslog · Rsyslog

contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.5% CWE-125 · Out-of-bounds read
9.8CVSS 3.1 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled.

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

Affected products

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

References

LinkTags
https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
https://github.com/rsyslog/rsyslog/pull/3875 PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPNCHI7X2IEXRH6RYD6IDPR
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6SUQE25RD37CD24BHKUWMG
https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
https://github.com/rsyslog/rsyslog/pull/3875 PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPNCHI7X2IEXRH6RYD6IDPR
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6SUQE25RD37CD24BHKUWMG

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-17041Rsyslog out-of-bounds write vulnerabilityAn issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages.…EPSS 4.4%9.8CVE-2019-17042Rsyslog improper input validation vulnerabilityAn issue was discovered in Rsyslog v8.1908.0. contrib/pmcisconames/pmcisconames.c has a heap overflow in the parser for Cisco log messages. The parse…EPSS 3.1%9.8CVE-2017-12588Rsyslog vulnerabilityThe zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, possibly allowing a format string attack…EPSS 2.8%8.5CVE-2008-5617Rsyslog permissions and access controls vulnerabilityThe ACL handling in rsyslog 3.12.1 to 3.20.0, 4.1.0, and 4.1.1 does not follow $AllowedSender directive, which allows remote attackers to bypass inte…EPSS 2.2%8.1CVE-2022-24903Rsyslog classic buffer overflow vulnerabilityRsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing…EPSS 3.9%7.5CVE-2026-19654Rsyslog out-of-bounds read vulnerabilityA unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafted input sequence during oversize-frame …EPSS 0.47%7.5CVE-2018-16881Rsyslog integer overflow vulnerabilityA denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket,…EPSS 2.2%7.5CVE-2014-3634Sysklogd project sysklogd memory buffer overflow vulnerabilityrsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute…EPSS 7.5%

Source: NIST National Vulnerability Database (record CVE-2019-17040), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.