Out-of-bounds Read in F5 Nginx Open Source
CVE-2026-32647
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 exe…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (7.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- F5 Nginx Open Source — versions 1.29.0, 1.1.19
- F5 Nginx Plus — versions R36, R35, R34
Weakness classification (CWE)
References
- my.f5.com/manage/s/article/K000160366 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-32647?
- CVE-2026-32647 is a high-severity vulnerability in F5 Nginx Open Source, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2026-03-24.
- How severe is CVE-2026-32647?
- High severity. CVSS v3 base score is 7.8 out of 10.