VULNERABILITY INTELLIGENCE

CVE-2007-4840

CVSS score5 MEDIUM
EPSS probability3.15%
CISA KEVNot currently listed
Published2007-09-12
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P

Description

PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references