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CVE-2026-32647

HIGH CVSS 4.0: 8.5 EPSS 0.01%
Updated Mar 26, 2026
F5
Parameter Value
CVSS 8.5 (HIGH)
Affected Versions 1.1.19 — 1.29.7
Fixed In 1.28.3
Type CWE-125 (Out-of-bounds Read)
Vendor F5
Public PoC No

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to trigger a buffer over-read or over-write to the NGINX worker memory resulting in its termination or possibly code execution, using a specially crafted MP4 file. This issue affects NGINX Open Source and NGINX Plus 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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 18

Configuration From (including) Up to (excluding)
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r32:p2:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r32:p3:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r32:p4:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r33:*:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r33:p1:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r33:p2:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r33:p3:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r34:*:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r34:p1:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r34:p2:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r35:*:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r35:p1:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r36:*:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r36:p1:*:*:*:*:*:*
F5 Nginx_Plus
cpe:2.3:a:f5:nginx_plus:r36:p2:*:*:*:*:*:*
F5 Nginx_Open_Source
cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*
1.1.19 1.28.3
F5 Nginx_Open_Source
cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*
1.29.0 1.29.7