rsyslog 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
公開された問題は バッファオーバーフロー、vendor risk memory corruption, and vendor risk input validation に関連することが多く、vendor surface software deployment and vendor surface production workloads の文脈で アプリケーションクラッシュ and vendor impact memory corruption などの暴露リスクを伴う場合があります。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2022-24903 | Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buf | [email protected] | 8.1 | 3.55% | 2022-05-05 | 2026-06-17 |
| CVE-2011-1490 | A 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 than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset | [email protected] | 5.5 | 0.38% | 2019-11-13 | 2026-06-16 |
| CVE-2011-1489 | A 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 than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset. | [email protected] | 5.5 | 0.47% | 2019-11-13 | 2026-06-16 |
| CVE-2011-1488 | A 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 the rsyslogd daemon service by crashing the service via a sequence of repeated log messages sent within short periods of time. | [email protected] | 5.5 | 0.48% | 2019-11-13 | 2026-06-16 |
| CVE-2019-17042 | An 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 this case, a space or a colon), but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parse | [email protected] | 9.8 | 3.07% | 2019-10-07 | 2026-06-16 |
| CVE-2019-17041 | An 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 delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and | [email protected] | 9.8 | 4.57% | 2019-10-07 | 2026-06-16 |
| CVE-2019-17040 | contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled. | [email protected] | 9.8 | 2.42% | 2019-09-30 | 2026-06-16 |
| CVE-2018-16881 | 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. | [email protected] | 7.5 | 2.24% | 2019-01-25 | 2026-06-16 |
| CVE-2018-1000140 | rsyslog 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 be exploitable a remote attacker that can connect to rsyslog and trigger a stack buffer overflow by sending a specially crafted x509 certificate. | [email protected] | 9.8 | 9.66% | 2018-03-23 | 2026-06-16 |
| CVE-2017-12588 | The 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. | [email protected] | 9.8 | 2.83% | 2017-08-06 | 2026-06-16 |
| CVE-2015-3243 | rsyslog uses weak permissions for generating log files, which allows local users to obtain sensitive information by reading files in /var/log/cron. | [email protected] | 5.5 | 0.45% | 2017-07-25 | 2026-06-16 |
| CVE-2014-3683 | Integer 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 vulnerability exists because of an incomplete fix for CVE-2014-3634. | [email protected] | 5.0 | 4.58% | 2014-11-01 | 2026-06-16 |
| CVE-2014-3634 | rsyslog 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 arbitrary code, or have other unspecified impact via a crafted priority (PRI) value that triggers an out-of-bounds array access. | [email protected] | 7.5 | 7.55% | 2014-11-01 | 2026-06-16 |
| CVE-2013-4758 | Double free vulnerability in the writeDataError function in the ElasticSearch plugin (omelasticsearch) in rsyslog before 7.4.2 and before 7.5.2 devel, when errorfile is set to local logging, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted JSON response. | [email protected] | 6.8 | 2.33% | 2013-10-04 | 2026-06-16 |
| CVE-2011-4623 | Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow. | [email protected] | 2.1 | 0.42% | 2012-09-25 | 2026-06-16 |
| CVE-2011-3200 | Stack-based buffer overflow in the parseLegacySyslogMsg function in tools/syslogd.c in rsyslogd in rsyslog 4.6.x before 4.6.8 and 5.2.0 through 5.8.4 might allow remote attackers to cause a denial of service (application exit) via a long TAG in a legacy syslog message. | [email protected] | 5.0 | 20.76% | 2011-09-06 | 2026-06-16 |
| CVE-2008-5618 | imudp in rsyslog 4.x before 4.1.2, 3.21 before 3.21.9 beta, and 3.20 before 3.20.2 generates a message even when it is sent by an unauthorized sender, which allows remote attackers to cause a denial of service (disk consumption) via a large number of spurious messages. | [email protected] | 5.0 | 1.17% | 2008-12-16 | 2026-06-16 |
| CVE-2008-5617 | The 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 intended access restrictions and spoof log messages or create a large number of spurious messages. | [email protected] | 8.5 | 1.91% | 2008-12-16 | 2026-06-16 |
| CVE-2005-3074 | SQL injection vulnerability in rsyslogd in RSyslog before 1.0.1 and before 1.10.1 allows remote attackers to execute arbitrary SQL commands via crafted syslog messages. | [email protected] | 7.5 | 1.11% | 2005-09-27 | 2026-06-16 |