How severe is CVE-2006-0539?

CVE-2006-0539 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2006-0539 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0539?

CVE-2006-0539 affects Thibault Godouet Fcron. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-0539?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-0539 published?

CVE-2006-0539 was published on 2006-02-04 and last updated on 2026-06-16.

CVE-2006-0539

CVE-2006-0539 is a medium-severity vulnerability in Thibault Godouet Fcron with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Thibault Godouet Fcron
Published: 2006-02-04
Last modified: 2026-06-16

Description

The convert-fcrontab program in fcron 3.0.0 might allow local users to gain privileges via a long command-line argument, which causes Linux glibc to report heap memory corruption, possibly because a strcpy in the strdup2 function can "overwrite some data."

Frequently asked questions

What is CVE-2006-0539?: The convert-fcrontab program in fcron 3.0.0 might allow local users to gain privileges via a long command-line argument, which causes Linux glibc to report heap memory corruption, possibly because a strcpy in the strdup2 function can "overwrite some data."
How severe is CVE-2006-0539?: CVE-2006-0539 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2006-0539 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0539?: CVE-2006-0539 affects Thibault Godouet Fcron. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0539?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0539 published?: CVE-2006-0539 was published on 2006-02-04 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:thibault_godouet:fcron:3.0.0:*:*:*:*:*:*:*

More vulnerabilities in Thibault Godouet Fcron

CVE-2004-1031 — High (CVSS 7.2): fcronsighup in Fcron 2.0.1, 2.9.4, and possibly earlier versions allows local users to bypass access restrictions and…
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CVE-2001-0685 — Low (CVSS 2.6): Thibault Godouet FCron prior to 1.1.1 allows a local user to corrupt another user's crontab file via a symlink attack…
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CVE-2004-1033 — Low (CVSS 2.1): Fcron 2.0.1, 2.9.4, and possibly earlier versions leak file descriptors of open files, which allows local users to…
CVE-2004-1032 — Low (CVSS 2.1): fcronsighup in Fcron 2.0.1, 2.9.4, and possibly earlier versions allows local users to delete arbitrary files or create…

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