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Servers and applications

CVE-2009-3557

The tempnam function in ext/standard/file.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass safe_mode restrictions, and create files in group-writable or world-writable directories, via the dir and prefix arguments.

Severity
Medium 5.0
Published
23 Nov 2009
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
2.1% in the next 30 daysHigher than 81% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
Over the network · No login needed
Attacker can
Change some data
CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Version 5.3.0
  • Version 5.2.10
  • Version 5.2.6
  • Version 5.2.5
All 62 release lines
  • Every version up to 5.2.11
  • Version 1.0
  • Version 2.0b10
  • Version 2.0
  • Version 3.0
  • Version 3.0.1
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.0.4
  • Version 3.0.5
  • Version 3.0.6
  • Version 3.0.7
  • Version 3.0.8
  • Version 3.0.9
  • Version 3.0.10
  • Version 3.0.11
  • Version 3.0.12
  • Version 3.0.13
  • Version 3.0.14
  • Version 3.0.15
  • Version 3.0.16
  • Version 3.0.17
  • Version 3.0.18
  • Version 4.0-beta1
  • Version 4.0-beta2
  • Version 4.0-beta3
  • Version 4.0-beta4
  • Version 4.0-beta_4_patch1
  • Version 4.0
  • Version 4.0.1
  • Version 4.0.2
  • Version 4.0.3
  • Version 4.0.4
  • Version 4.0.5
  • Version 4.0.6
  • Version 4.0.7
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.2.0
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0
  • Version 4.3.1
  • Version 4.3.2
  • Version 4.3.7
  • Version 4.3.10
  • Version 4.3.11
  • Version 4.4.2
  • Version 4.4.7
  • Version 4.4.8
  • Version 4.4.9
  • Version 5.0.0-beta4
  • Version 5.0.0
  • Version 5.0.3
  • Version 5.1.1
  • Version 5.2.1
  • Version 5.2.5
  • Version 5.2.6
  • Version 5.2.10
  • Version 5.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-3557
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-3557