Php Version 5640 Vulnerabilities Link ✦ Official & Tested

Securing the Past: Analyzing PHP Version 5.6.40 Vulnerabilities and the Path to Modern Security

(most authoritative)

: An integer underflow vulnerability within gd_interpolation.c . This can cause the runtime engine to trigger an efree() call on uninitialized heap memory, initiating a use-after-free scenario. 2. Multibyte String Regex Over-reads (CVE-2019-9023)

Modern plugins, themes, and frameworks (like WordPress, Drupal, or Laravel) no longer support PHP 5.6, leading to broken websites and functionality. php version 5640 vulnerabilities link

and no longer receives security patches from the PHP development team.

The dangers of running PHP 5.6.40 extend beyond native language bugs. Legacy environments usually depend on outdated operating systems and companion packages: PHP 5.6: Why you should upgrade - Influential Software

1. Regular Expression Memory Corruption (Mbstring Extension) Securing the Past: Analyzing PHP Version 5

Out-of-bounds read vulnerabilities allow attackers to read portions of the server's memory.

Several Core and Extension bugs plague the PHP 5.6 lifecycle, relating to memory corruption.

Although 5.6.40 was a "security release," it remains vulnerable to numerous exploits discovered after its EOL. Because the PHP project no longer maintains this branch, any vulnerability found since 2019 remains in official builds. Although 5.6.40 was a "security release

https://nvd.nist.gov/vuln/search/results?form_type=Basic&results_type=overview&query=PHP+5.6.40&search_type=all

Migrating to a supported version of PHP (such as PHP 8.2 or 8.3) is the only definitive fix.

For those who simply need to know the worst offenders linked to version "5640," here are the top CVEs that remain unpatched in 5.6.40.

Securing Legacy Systems: A Deep Dive into PHP 5.6.40 Vulnerabilities

The official U.S. government repository of standards-based vulnerability management data.