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Fencer Vulns
low 2.1

CVE-2001-0040 json

APC UPS daemon, apcupsd, saves its process ID in a world-writable file, which allows local users to kill an arbitrary process by specifying…

published 2001-02-16 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0040

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
1
Exploit-DB

Summary

APC UPS daemon, apcupsd, saves its process ID in a world-writable file, which allows local users to kill an arbitrary process by specifying the target process ID in the apcupsd.pid file.

Patch / fix

Timeline

  1. First public exploit (EDB-251)
  2. Published

Exploit prediction

0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-251 APC UPS 3.7.2 - 'apcupsd' Local Denial of Service dos, 2001-01-15
  • archives.neohapsis.com http://archives.neohapsis.com/archives/bugtraq/2000-12/0066.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

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.