CVE-2026-27784
Memory Corruption in 32-bit NGINX ngx_http_mp4_module
Publication date: 2026-03-24
Last updated on: 2026-03-30
Assigner: F5 Networks
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| 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-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the 32-bit version of NGINX Open Source when it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration. An attacker can exploit this by sending a specially crafted MP4 file that causes the module to over-read or over-write the memory used by an NGINX worker process. This memory corruption can lead to the termination of the worker process.
How can this vulnerability impact me? :
The impact of this vulnerability is that an attacker with the ability to trigger processing of a malicious MP4 file can cause an NGINX worker process to crash. This can lead to denial of service by terminating worker processes, potentially disrupting the availability of the web server or service relying on NGINX.
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