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Servers and applications

CVE-2007-3998

The wordwrap function in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, does not properly use the breakcharlen variable, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash, or infinite loop) via certain arguments, as demonstrated by a 'chr(0), 0, ""' argument set.

Severity
Medium 5.0
Published
4 Sept 2007
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Fixed in
4.4.8, 5.2.4
Exploit chance
3% in the next 30 daysHigher than 87% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • From 4.0.0 before 4.4.8
  • From 5.0.0 before 5.2.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-3998
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-3998