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Servers and applications

CVE-2010-4645

strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation, which is not properly handled in x87 FPU registers, as demonstrated using 2.2250738585072011e-308.

Severity
Medium 5.0
Published
11 Jan 2011
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
15% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
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
  • Version 5.3.4
  • Version 5.3.3
  • Version 5.3.2
  • Version 5.3.1
All 22 release lines
  • Version 5.2.0
  • Version 5.2.1
  • Version 5.2.2
  • Version 5.2.3
  • Version 5.2.4
  • Version 5.2.5
  • Version 5.2.6
  • Version 5.2.7
  • Version 5.2.8
  • Version 5.2.9
  • Version 5.2.10
  • Version 5.2.11
  • Version 5.2.12
  • Version 5.2.13
  • Version 5.2.14
  • Version 5.2.15
  • Version 5.2.16
  • Version 5.3.0
  • Version 5.3.1
  • Version 5.3.2
  • Version 5.3.3
  • Version 5.3.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2010-4645
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2010-4645