CVE WatchJul 15, 2026

CVE-2026-27784

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-

CVSS

7.8

High

EPSS

1.0%

p60

KEV

—

Exploit Today

0-100

Published: Mar 24, 2026 · Last modified: Jul 15, 2026 · CWE-190

EPSS · 30d

1.0%EPSS · 30 days1.0%

2026-06-302026-07-16

Technical 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.

Official references

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