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Case File

CVE-2013-3735

HIGH · CVSS 7.5 EPSS 2.83% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2013-05-31 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2013-3735
Severity
HIGH
CVSS
7.5
EPSS
2.83%

Original NVD Description

The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment. NOTE: the vendor's http://php.net/security-note.php page says "for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.