AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2017-5340

CRITICAL · CVSS 9.8 EPSS 16.69% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2017-01-11 · 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.

GitHub PoC Links

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

CVE
CVE-2017-5340
Severity
CRITICAL
CVSS
9.8
EPSS
16.69%

Original NVD Description

Zend/zend_hash.c in PHP before 7.0.15 and 7.1.x before 7.1.1 mishandles certain cases that require large array allocations, which allows remote attackers to execute arbitrary code or cause a denial of service (integer overflow, uninitialized memory access, and use of arbitrary destructor function pointers) via crafted serialized data.