Php Version 5640 Vulnerabilities Link Today

Instead of browsing a static link, use automated vulnerability scanners that return dynamic results.

Because 5.6.40 is EOL, any vulnerability discovered after Jan 2019 remains unpatched in this version. Notable examples:

| CVE ID | Description | CVSS | |--------|-------------|------| | CVE-2019-11043 | Remote code execution via env request variable (PHP-FPM) – unpatched in 5.6.40 | 9.8 (Critical) | | CVE-2019-9641 | Buffer overflow in php_url_parse_ex – DoS/RCE | 7.5 (High) | | CVE-2019-9020 | XML parsing vulnerability in libxml2 affecting PHP | 7.5 | | CVE-2018-20783 | Buffer over-read in php_escape_html_entities | 7.5 | | CVE-2016-10712 | Use-after-free in stream_get_filters | 7.5 |

Full list from CVE Details shows many more critical issues (RCE, SQL injection via PDO, path traversal, etc.).

PHP 5.6.40 should NOT be used in production - it has many known, unpatched vulnerabilities. Upgrade to PHP 7.4+ (or PHP 8.x) immediately for security.

PHP version 5.6.40 was released on January 10, 2019 , as a final security update to address several critical bugs. Official security support for the entire PHP 5.6 branch ended on December 31, 2018

, meaning version 5.6.40 and all prior 5.6.x versions no longer receive official patches for newly discovered flaws. Critical Vulnerabilities in PHP 5.6.40

Because PHP 5.6.40 is end-of-life (EOL), it remains vulnerable to multiple critical issues disclosed since its final release, including: CVE-2024-4577 (Critical - CVSS 9.8):

A remote code execution (RCE) vulnerability that affects PHP running on Windows in CGI configurations. Attackers can bypass previous protections to execute arbitrary commands. Buffer Overflows & Underflows: CVE-2016-10166: An integer underflow in the gd_interpolation.c CVE-2019-6977: A heap-based buffer overflow in gdImageColorMatch Memory Corruption: CVE-2019-9020: A heap-based buffer over-read in xmlrpc_decode that can lead to system compromise. CVE-2019-9021: php version 5640 vulnerabilities link

A heap-based buffer over-read in the PHAR extension allowing attackers to read memory past actual data. Out-of-Bounds Reads: CVE-2019-9024: An out-of-bounds read error in xmlrpc_decode triggered by a hostile XMLRPC server. Regular Expression Vulnerabilities: CVE-2019-9023: Multiple heap-based buffer over-read instances in regular expression functions. Security Risks of Continued Use

As of 2026, running PHP 5.6.40 poses extreme risks to production environments: PHP Requirements - Knowledgebase - The Events Calendar

In the quiet, humming rows of a forgotten data center, a server named "Old Faithful" still ran a relic: PHP version 5.6.40. Released on January 10, 2019, this was the final curtain call for the PHP 5.6 branch, a version that had powered the web for years but was now officially unsupported and "End of Life".

For a long time, Old Faithful felt secure. After all, 5.6.40 was a "security release." It had been patched to fix multiple vulnerabilities that plagued earlier 5.6.x versions, including integer underflow, buffer overflows, and out-of-bounds read errors. It was the fortress built to withstand the dying days of an era.

But as years passed, the world outside changed. The CVD (Common Vulnerabilities and Exposures) database began to list new shadows:

Memory Corruption: Tiny cracks in how the server handled data, potentially allowing an attacker to crash the system.

Input Validation Flaws: Silent doors left ajar where malicious actors could slip in unauthorized commands.

Denial of Service (DoS): Overwhelming the server until it could no longer serve its users. Instead of browsing a static link, use automated

The real danger wasn't just in the code itself, but in what it connected to. Old Faithful sat on an unpatched SQL Injection vulnerability (CVE-2026-5640) within its shopping portal software, allowing remote attackers to manipulate database queries and steal customer data. Other critical flaws, like CVE-2023-5640, had reached a "Critical" CVSS score of 9.8, meaning the wall was virtually gone.

The story of 5.6.40 is a warning: staying on unsupported software is no longer an option. To survive in a modern landscape of code injection and cryptographic failures, Old Faithful's administrators finally realized they had to let go of the past and upgrade to a supported version like PHP 8.x.

PHP Vulnerabilities: Assessment, Prevention, and Mitigation - Zend

PHP 5.6.40, which reached end-of-life on December 31, 2018, is vulnerable to numerous security risks, including heap-based buffer overflows (CVE-2019-9023, CVE-2019-6977) and arbitrary code execution, due to a lack of security patches. Continued use of this version poses significant compliance risks, such as violating PCI DSS and GDPR standards, while hindering performance compared to PHP 8.x. For more information on the release, see the PHP 5.6.40 Release Announcement endoflife.date PHP | endoflife.date

PHP version 5.6.40 was released on January 10, 2019 , as a final security release for the 5.6 branch. While 5.6.40 itself addressed several issues, it has since reached its official End of Life (EOL)

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

Detailed lists of historical vulnerabilities and CVEs for this version can be found on CVE Details Blog Post: The Hidden Risk of PHP 5.6.40 in 2026 If you are still running PHP 5.6.40

, you are essentially driving a car with a 2019 inspection sticker—it might still run, but it’s no longer safe for the road. Scan your server for known exploits using: #

As of April 2026, PHP 5.6.40 has been officially unsupported for over seven years. While it was intended to be the most secure version of the 5.6 series at the time of its release, the threat landscape has evolved drastically since then. Why "Final Security Release" is a Misnomer

When PHP 5.6.40 dropped in early 2019, it was the "last scheduled release". However, "final" doesn't mean "invulnerable." It simply means the PHP team stopped looking for bugs in that branch. Any vulnerability discovered since then—of which there have been many—remains in your environment. Critical Vulnerabilities at a Glance

Systems running PHP 5.6.40 or earlier are susceptible to several high-impact exploits: PHP PHP 5.6.40 security vulnerabilities, CVEs

This page lists vulnerability statistics for CVEs published in the last ten years, if any, for PHP » PHP » 5.6. 40 . CVE Details Unsupported Branches - PHP

The PHP version 5.6.40 has several known vulnerabilities. Here are some resources and guidelines to help you understand and mitigate these issues:

You want a link to a list of flaws. But the real risk is not the list; it is the lack of a fix. Here is why collecting CVEs for 5.6.40 is a losing battle:

If you are asking about PHP 5.6.40, you are looking at the final, now obsolete release of PHP 5.6 from January 10, 2019. If "5640" refers to a version string like 5.6.4.0 (an old alpha), that version has even more unpatched flaws. This post assumes the former, as it is the more common legacy system reference.

There is no single “master link” labeled "5640." Instead, you must look at the aggregate of Common Vulnerabilities and Exposures (CVEs) that affect version 5.6.40.

  • Scan your server for known exploits using: 
    # Using Trivy (open source)
trivy filesystem --scanners vuln /path/to/php-app --severity CRITICAL,HIGH