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Fencer Vulns
high 7.2

CVE-2000-0763 json

xlockmore and xlockf do not properly cleanse user-injected format strings, which allows local users to gain root privileges via the -d opti…

published 2000-10-13 26 y ago modified 2026-06-16 4 mo ago also EUVD-2000-0757

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
2
Exploit-DB

Summary

xlockmore and xlockf do not properly cleanse user-injected format strings, which allows local users to gain root privileges via the -d option.

Patch / fix

Timeline

  1. First public exploit (EDB-20153)
  2. Published

Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-20154 David Bagley xlock 4.16 - User Supplied Format String (2) local, 2000-10-21
  • EDB-20153 David Bagley xlock 4.16 - User Supplied Format String (1) local, 2000-08-15
  • securityfocus.com http://www.securityfocus.com/bid/1585 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.