Php Version 5640 Vulnerabilities Verified -

: A flaw in the PHAR extension could allow an attacker to read allocated or unallocated memory past the actual data by using a specially crafted filename.

PHP 5.6.40 was released on January 10, 2019. It marked the final security release for the PHP 5.6 branch. Since that date, the PHP community has provided no official security patches for this version.

Running legacy software is a calculated risk that many organizations take for compatibility reasons. However, for those still using , that risk has shifted from "calculated" to "critical." While version 5.6.40 was the final security release for the 5.x branch, it reached its official End of Life (EOL) on December 31, 2018 .

) discovered in later years often remain unpatched in 5.6.40 unless a third-party vendor provides backported fixes Cybersecurity Help Legacy Dependency Vulnerabilities php version 5640 vulnerabilities verified

The most effective resolution is to upgrade to a actively supported version of PHP (such as PHP 8.2 or higher). Modern branches offer massive performance upgrades alongside crucial security patches.

The 5.6.40 release targeted specific vulnerabilities in PHP's core functionality, particularly within the Phar extension and compatibility layers. 1. Phar Buffer Overflow (CVE-2019-6977) Heap-based Buffer Overflow Component: ext/phar/phar_object.c Impact: Remote Code Execution (RCE)

Invalid and uninitialized memory reads occurring inside exif_process_SOFn and exif_process_IFD_in_TIFF parsing functions. : A flaw in the PHAR extension could

What or framework is running on this PHP version?

These patterns indicate attempted exploitation of CVE-2019-11043 or IMAP injection.

A use-after-free vulnerability in the phar_parse function (similar to CVE-2020-7063 ) allows unauthenticated remote attackers to execute arbitrary code by dereferencing freed pointers. Since that date, the PHP community has provided

The bundled OpenSSL bindings fail to support modern, secure TLS configurations by default.

PHP 5.6.40 is a vulnerable end-of-life software version, with numerous high-risk CVEs that enable remote code execution, memory corruption, information disclosure, and security bypasses. The risks of running this version are severe and increase daily.

: Invalid input passed to the xmlrpc_decode() function triggers an invalid memory access flaw (heap out-of-bounds read or use-after-free).

If your website processes credit card payments, running an EOL runtime with known, unpatched vulnerabilities guarantees a failure during a Payment Card Industry Data Security Standard (PCI-DSS) audit. This can lead to heavy fines or revocation of your merchant account.

As an unsupported version, PHP 5.6.40 does not receive official patches for new threats. Verified vulnerabilities associated with this specific version include: