CVE-2007-1856

No known exploitation. EPSS puts it in the 30th percentile. A vendor fix is available.

CVSS 2.02.1Low EPSS percentile30th0.4% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2007-04-18Updated 2026-04-23Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS30th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.4% chance of exploitation activity in the next 30 days, which ranks it in the 30th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 7008 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2026-04-23Patch availablerecord updated
2007-04-18Publishedweakness classified

Affected products

paul vixieindividual-dev · USaka vixie cron
- vixie cronOn-premOperating Systems / unix-bsd
Red Hat Inc.commercial · USaka red hat
- Red Hat Enterprise LinuxOSOn-premOperating Systems / linux-distro

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:L/AC:L/Au:N/C:N/I:N/A:P

Scored 2.1 by NVD.

How it is reached

Access Vector LocalRequires local access
Access Complexity LowNo special conditions required
Authentication NoneNo authentication required

Impact if exploited

Confidentiality NoneNo confidentiality impact
Integrity NoneNo integrity impact
Availability PartialReduced performance or service disruption

Weaknesses

NVD-CWE-OtherNo name in the record

Sources

References in the record

And 15 more references. See all after sign-in

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