rsyslog

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The 15 most recently published vulnerabilities affecting rsyslog.

• CVE-2026-61548Rsyslog: mmpstrucdata stack buffer overflow with oversized RFC5424 structured data8.1Sep 18, 2026
• CVE-2026-55556Rsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handlingSep 18, 2026
• CVE-2026-19654Rsyslog: a configuration-dependent issue in rsyslog's optional imptcp input module can allow an unauthenticated remote peer to crash rsyslogd7.5Aug 12, 2026
• CVE-2022-24903Buffer overflow in TCP syslog server (receiver) components in rsyslog8.1May 5, 2022
• CVE-2011-1490A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when multiple rulesets were used and some output batches contained messages belonging to more tha...5.5Nov 14, 2019
• CVE-2011-1489A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages were logged when multiple rulesets were used and some output batches contained messages belonging to more th...5.5Nov 14, 2019
• CVE-2011-1488A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when $RepeatedMsgReduction was enabled. A local attacker could use this flaw to cause a denial of...5.5Nov 14, 2019
• CVE-2019-17042An issue was discovered in Rsyslog v8.1908.0. contrib/pmcisconames/pmcisconames.c has a heap overflow in the parser for Cisco log messages. The parser tries to locate a log message delimiter (in th...9.8Oct 7, 2019
• CVE-2019-17041An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimi...9.8Oct 7, 2019
• CVE-2019-17040contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled.9.8Sep 30, 2019
• CVE-2018-16881A 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 be...7.5Jan 25, 2019
• CVE-2018-1000140rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code execution. This attack appear to ...9.8Mar 23, 2018
• CVE-2017-12588The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, possibly allowing a format string attack with unspecified impact.9.8Aug 6, 2017
• CVE-2015-3243rsyslog uses weak permissions for generating log files, which allows local users to obtain sensitive information by reading files in /var/log/cron.5.5Jul 25, 2017
• CVE-2014-3683Integer overflow in rsyslog before 7.6.7 and 8.x before 8.4.2 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash) via a large priority (PRI) value. NOTE: this...5.0Nov 2, 2014