CVE-2001-0738

LogLine function in klogd in sysklogd 1.3 in various Linux distributions allows an attacker to cause a denial of service (hang) by causing null bytes to be placed in log messages.

Published: 2001-10-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-0738 is rated Moderate Risk (49.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.58%). 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-2001-0738

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 2026-01-23 0.60% 1.58% +0.98%
2 2025-09-29 0.82% 0.60% -0.22%
3 2025-03-30 — 0.82% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0738

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-2001-0738

Affected software / configurations for CVE-2001-0738

Vendor Product Version Raw CPE
immunix immunix 6.2 cpe:2.3:a:immunix:immunix:6.2:*:*:*:*:*:*:*
immunix immunix 7.0 cpe:2.3:a:immunix:immunix:7.0:*:*:*:*:*:*:*
immunix immunix 7.0_beta cpe:2.3:a:immunix:immunix:7.0_beta:*:*:*:*:*:*:*
debian debian_linux 1.3 cpe:2.3:o:debian:debian_linux:1.3:*:*:*:*:*:*:*
debian debian_linux 2.2 cpe:2.3:o:debian:debian_linux:2.2:*:*:*:*:*:*:*

References for CVE-2001-0738

cvelogic Threat Intelligence