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Case File

CVE-2007-0988

MEDIUM · CVSS 4.3 EPSS 2.31%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2007-02-20 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. It may lead to a denial-of-service condition.

CVE
CVE-2007-0988
Severity
MEDIUM
CVSS
4.3
EPSS
2.31%

Original NVD Description

The zend_hash_init function in PHP 5 before 5.2.1 and PHP 4 before 4.4.5, when running on a 64-bit platform, allows context-dependent attackers to cause a denial of service (infinite loop) by unserializing certain integer expressions, which only cause 32-bit arguments to be used after the check for a negative value, as demonstrated by an "a:2147483649:{" argument.