Vulnerability Description
The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| F5 | Nginx Open Source | >= 1.1.19, < 1.28.3 |
Related Weaknesses (CWE)
References
- https://my.f5.com/manage/s/article/K000160364MitigationVendor Advisory
FAQ
What is CVE-2026-27784?
CVE-2026-27784 is a vulnerability with a CVSS score of 7.8 (HIGH). The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its term...
How severe is CVE-2026-27784?
CVE-2026-27784 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27784?
Check the references section above for vendor advisories and patch information. Affected products include: F5 Nginx Open Source.