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Fencer Vulns
critical 10.0

CVE-2004-0524 json

Buffer overflow in the chpasswd command in the Change_passwd plugin before 4.0, as used in SquirrelMail, allows local users to gain root pr…

published 2004-06-08 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0523

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
2
Exploit-DB

Summary

Buffer overflow in the chpasswd command in the Change_passwd plugin before 4.0, as used in SquirrelMail, allows local users to gain root privileges via a long user name.

Patch / fix

Timeline

  1. First public exploit (EDB-273)
  2. Published

Exploit prediction

4.61% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-417 SquirrelMail - 'chpasswd' Local Privilege Escalation (Brute Force) local, 2004-08-25
  • EDB-273 SquirrelMail - 'chpasswd' Local Buffer Overflow local, 2004-04-20
  • securityfocus.com http://www.securityfocus.com/bid/10166 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/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.