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Fencer Vulns
high 7.5

CVE-2003-0166 in the critical feed json

Integer signedness error in emalloc() function for PHP before 4.3.2 allow remote attackers to cause a denial of service (memory consumption…

published 2003-03-27 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0162

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.1%
EPSS 14.1% chance of exploitation in 30 days, percentile 96%
public exploits
3
Exploit-DB

Summary

Integer signedness error in emalloc() function for PHP before 4.3.2 allow remote attackers to cause a denial of service (memory consumption) and possibly execute arbitrary code via negative arguments to functions such as (1) socket_recv, (2) socket_recvfrom, and possibly other functions.

Timeline

  1. First public exploit (EDB-22419)
  2. Published

Exploit prediction

14.12% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-22426 PHP 4.x - 'socket_recvfrom()' Signed Integer Memory Corruption dos, 2003-03-26
  • EDB-22425 PHP 4.x - 'socket_recv()' Signed Integer Memory Corruption dos, 2003-03-26
  • EDB-22419 PHP 4.3 - 'socket_iovec_alloc()' Integer Overflow dos, 2003-03-25
  • securityfocus.com http://www.securityfocus.com/bid/7198 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/7197 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Technology feeds

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.