CVE-2026-32647
Buffer Overflow in NGINX ngx_http_mp4_module Enables Code Execution
Publication date: 2026-03-24
Last updated on: 2026-03-26
Assigner: F5 Networks
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| f5 | nginx_plus | r32 |
| f5 | nginx_plus | r32 |
| f5 | nginx_plus | r33 |
| f5 | nginx_plus | r33 |
| f5 | nginx_plus | r34 |
| f5 | nginx_plus | r32 |
| f5 | nginx_plus | r33 |
| f5 | nginx_plus | r34 |
| f5 | nginx_plus | r36 |
| f5 | nginx_plus | r33 |
| f5 | nginx_plus | r34 |
| f5 | nginx_plus | r35 |
| f5 | nginx_plus | r36 |
| f5 | nginx_plus | r36 |
| f5 | nginx_plus | r32 |
| f5 | nginx_plus | r35 |
| f5 | nginx_open_source | From 1.29.0 (inc) to 1.29.7 (exc) |
| f5 | nginx_open_source | From 1.1.19 (inc) to 1.28.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the ngx_http_mp4_module module of NGINX Open Source and NGINX Plus. It allows an attacker to cause a buffer over-read or buffer over-write in the NGINX worker memory by using a specially crafted MP4 file. This can lead to the termination of the NGINX worker process or potentially allow the attacker to execute arbitrary code.
The vulnerability is exploitable only if NGINX is built with the ngx_http_mp4_module module and the mp4 directive is enabled in the configuration. Additionally, the attacker must be able to trigger the processing of a malicious MP4 file through this module.
How can this vulnerability impact me? :
This vulnerability can impact you by causing the NGINX worker process to crash, resulting in denial of service. More severely, it may allow an attacker to execute arbitrary code on the server, which could lead to full system compromise, data theft, or further attacks within your environment.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know