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Fencer Vulns
medium 5.5

CVE-2019-9706 json

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because o…

published 2019-03-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19072

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.

Patch / fix

  • cron Debian 14, Debian 13, Debian 12 3.0pl1-133

debian advisories DEBIAN-CVE-2019-9706

  • cron Ubuntu 18.04 LTS 3.0pl1-128.1ubuntu1.1
  • cron Ubuntu Pro 16.04 LTS 3.0pl1-128ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2019-9706

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-9706 updated cvss 7.0

vixie-cron: use-after-free resulting in dos

  • Red Hat Enterprise Linux 5 vixie-cron Red Hat Enterprise Linux 6 cronie, cronie-anacron, cronie-noanacron Red Hat Enterprise Linux 7 cronie, cronie-anacron, cronie-noanacron Red Hat Enterprise Linux 8 cronie, cronie-anacron, cronie-noanacron
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.debian.org https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809167 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.