high CVSS 7.5

CVE-2025-14177·PHP vulnerability

In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.

Severity
high
Software
PHP
Fixed in
8.4.16
Published

Affected versions

From: 8.4.0

Until: 8.4.16

Fixed in: 8.4.16

How to fix this CVE

Update PHP to version 8.4.16 or later to patch a memory disclosure vulnerability in the getimagesize() function. This vulnerability can leak sensitive heap memory when processing images through certain stream wrappers, potentially exposing confidential server data. Ensure all PHP instances in your environment are updated to the fixed version.

sudo dnf update php

Defensia detects this vulnerability

How to check if you are affected

  1. Run `php -v` to check the installed PHP version and confirm if it falls within the affected range (8.4.0 to 8.4.15)
  2. Review your application code for calls to getimagesize() with php://filter or multi-chunk stream wrappers that could trigger the vulnerability
  3. Search application and web server logs for getimagesize() function calls combined with php://filter stream wrapper usage patterns
  4. After patching, re-run `php -v` to confirm PHP has been updated to version 8.4.16 or later

FAQ

What is CVE-2025-14177?

CVE-2025-14177 is a memory disclosure vulnerability in PHP's getimagesize() function that unintentionally exposes uninitialized heap memory when processing images via certain stream handlers, potentially revealing sensitive server data to attackers.

Is CVE-2025-14177 being actively exploited?

No, CVE-2025-14177 is not currently listed as actively exploited in the CISA Known Exploited Vulnerabilities (KEV) catalog, and no public exploits have been released.

What versions of PHP are affected by CVE-2025-14177?

PHP versions 8.4.0 through 8.4.15 are vulnerable. Earlier major versions (8.1, 8.2, 8.3) have corresponding affected ranges that are also patched in their latest releases.

How do I check if my server is vulnerable to CVE-2025-14177?

Execute `php -v` to display your current PHP version. If it shows 8.4.0 through 8.4.15, your server is vulnerable and requires immediate patching to 8.4.16 or later.

Does Defensia detect CVE-2025-14177?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If PHP is installed on a monitored server, CVE-2025-14177 will appear in your dashboard with remediation steps.

Related PHP CVEs

CVE-2025-47916CVSS 10Invision Community 5.0.0 before 5.0.7 allows remote code execution via crafted template strings to themeeditor.php. The issue lies within the themeeditor controller (file: /applications/core/modules/front/system/themeeditor.php), where a protected method named customCss can be invoked by unauthenticated users. This method passes the value of the content parameter to the Theme::makeProcessFunction() method; hence it is evaluated by the template engine. Accordingly, this can be exploited by unauthenticated attackers to inject and execute arbitrary PHP code by providing crafted template strings.
CVE-2026-28289CVSS 10FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A patch bypass vulnerability for CVE-2026-27636 in FreeScout 1.8.206 and earlier allows any authenticated user with file upload permissions to achieve Remote Code Execution (RCE) on the server by uploading a malicious .htaccess file using a zero-width space character prefix to bypass the security check. The vulnerability exists in the sanitizeUploadedFileName() function in app/Http/Helper.php. The function contains a Time-of-Check to Time-of-Use (TOCTOU) flaw where the dot-prefix check occurs before sanitization removes invisible characters. This vulnerability is fixed in 1.8.207.
CVE-2024-5932CVSS 10The GiveWP – Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.1 via deserialization of untrusted input from the 'give_title' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely, and to delete arbitrary files.
CVE-2025-62521CVSS 10ChurchCRM is an open-source church management system. Prior to version 5.21.0, a pre-authentication remote code execution vulnerability in ChurchCRM's setup wizard allows unauthenticated attackers to inject arbitrary PHP code during the initial installation process, leading to complete server compromise. The vulnerability exists in `setup/routes/setup.php` where user input from the setup form is directly concatenated into a PHP configuration template without any validation or sanitization. Any parameter in the setup form can be used to inject PHP code that gets written to `Include/Config.php`, which is then executed on every page load. This is more severe than typical authenticated RCE vulnerabilities because it requires no credentials and affects the installation process that administrators must complete. Version 5.21.0 patches the issue.
CVE-2025-25174CVSS 10Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in beeteam368 BeeTeam368 Extensions beeteam368-extensions allows PHP Local File Inclusion.This issue affects BeeTeam368 Extensions: from n/a through <= 1.9.4.

References

Track CVEs across your fleet automatically

Defensia scans your Linux servers and tells you exactly which ones are running vulnerable versions — including CVE-2025-14177. Free for 1 server.

Get started free