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Fencer Vulns
high 7.2

CVE-2001-0559 json

crontab in Vixie cron 3.0.1 and earlier does not properly drop privileges after the failed parsing of a modification operation, which could…

published 2001-08-14 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0551

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
2
Exploit-DB

Summary

crontab in Vixie cron 3.0.1 and earlier does not properly drop privileges after the failed parsing of a modification operation, which could allow a local attacker to gain additional privileges when an editor is called to correct the error.

Patch / fix

Timeline

  1. First public exploit (EDB-20822)
  2. Published

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-20823 Vixie Cron crontab 3.0 - Privilege Lowering Failure (2) local, 2001-07-05
  • EDB-20822 Vixie Cron crontab 3.0 - Privilege Lowering Failure (1) local, 2001-05-07
  • securityfocus.com http://www.securityfocus.com/archive/1/183029 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/2687 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

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.