How severe is CVE-2007-1856?

CVE-2007-1856 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2007-1856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1856?

CVE-2007-1856 affects Paul Vixie Vixie Cron. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1856?

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

When was CVE-2007-1856 published?

CVE-2007-1856 was published on 2007-04-18 and last updated on 2026-06-16.

CVE-2007-1856

CVE-2007-1856 is a low-severity vulnerability in Paul Vixie Vixie Cron with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Paul Vixie Vixie Cron
Published: 2007-04-18
Last modified: 2026-06-16

Description

Vixie Cron before 4.1-r10 on Gentoo Linux is installed with insecure permissions, which allows local users to cause a denial of service (cron failure) by creating hard links, which results in a failed st_nlink check in database.c.

Frequently asked questions

What is CVE-2007-1856?: Vixie Cron before 4.1-r10 on Gentoo Linux is installed with insecure permissions, which allows local users to cause a denial of service (cron failure) by creating hard links, which results in a failed st_nlink check in database.c.
How severe is CVE-2007-1856?: CVE-2007-1856 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2007-1856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1856?: CVE-2007-1856 affects Paul Vixie Vixie Cron. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-1856 published?: CVE-2007-1856 was published on 2007-04-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:paul_vixie:vixie_cron:*:*:*:*:*:*:*:*

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