How severe is CVE-2002-0004?

CVE-2002-0004 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2002-0004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0004?

CVE-2002-0004 primarily affects Caldera Openlinux Server. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-0004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2002-0004 published?

CVE-2002-0004 was published on 2002-02-27 and last updated on 2026-06-16.

CVE-2002-0004

CVE-2002-0004 is a high-severity vulnerability in Caldera Openlinux Server with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Caldera Openlinux Server
Published: 2002-02-27
Last modified: 2026-06-16

Description

Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes at to free the same memory twice.

Frequently asked questions

What is CVE-2002-0004?: Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes at to free the same memory twice.
How severe is CVE-2002-0004?: CVE-2002-0004 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2002-0004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0004?: CVE-2002-0004 primarily affects Caldera Openlinux Server. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-0004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2002-0004 published?: CVE-2002-0004 was published on 2002-02-27 and last updated on 2026-06-16.

References

Affected products (46)

cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*
cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:68k:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:alpha:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:arm:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:ia-32:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:powerpc:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:sparc:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.1.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.2:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.3:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.4:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:8.0:*:ppc:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:8.1:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:8.1:*:ia64:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.5.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:6.2:*:alpha:*:*:*:*:*
cpe:2.3:o:redhat:linux:6.2:*:i386:*:*:*:*:*
cpe:2.3:o:redhat:linux:6.2:*:sparc:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.0:*:alpha:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.0:*:i386:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.1:*:alpha:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.1:*:i386:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.1:*:ia64:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.2:*:alpha:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.2:*:i386:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.2:*:ia64:*:*:*:*:*
cpe:2.3:o:slackware:slackware_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:slackware:slackware_linux:7.1:*:*:*:*:*:*:*
cpe:2.3:o:slackware:slackware_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:6.4:*:i386:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:6.4:*:ppc:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:6.4:alpha:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.0:*:i386:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.0:*:ppc:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.0:*:sparc:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.0:alpha:*:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.1:*:ppc:*:*:*:*:*
cpe:2.3:o:suse:suse_linux:7.1:*:sparc:*:*:*:*:*

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