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.

Published: 2008-12-17 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-5618 is rated Moderate Risk (42.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.47%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-5618

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.24% 0.47% +0.24%
2 2023-03-07 1.05% 0.24% -0.82%
3 2022-02-04 — 1.05% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-5618

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-5618

OS Trackers for CVE-2008-5618

vendor priority summary link
debian low CVE-2008-5618 low priority: Debian including 1 source packages (rsyslog), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2008-5618
redhat low — https://access.redhat.com/security/cve/CVE-2008-5618
ubuntu low CVE-2008-5618 low priority: Ubuntu including 1 source packages (rsyslog), 10 status rows across 10 suites (dapper, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, upstream): not-affected 5, DNE 2, ignored 2, released 1. https://ubuntu.com/security/CVE-2008-5618

Vendor comments (NVD) for CVE-2008-5618

  • Red Hat (2008-12-17T00:00:00)

    Not vulnerable. This issue did not affect the version of the rsyslog package, as shipped with Red Hat Enterprise Linux 5.

Affected software / configurations for CVE-2008-5618

Vendor Product Version Raw CPE
rsyslog rsyslog 3.12.1 cpe:2.3:a:rsyslog:rsyslog:3.12.1:*:*:*:*:*:*:*
rsyslog rsyslog 3.20.0 cpe:2.3:a:rsyslog:rsyslog:3.20.0:*:*:*:*:*:*:*
rsyslog rsyslog 4.1.0 cpe:2.3:a:rsyslog:rsyslog:4.1.0:*:*:*:*:*:*:*
rsyslog rsyslog 4.1.1 cpe:2.3:a:rsyslog:rsyslog:4.1.1:*:*:*:*:*:*:*

References for CVE-2008-5618

cvelogic Threat Intelligence