CVE-2020-19692 Memory corruption in n/a

Critical 9.8 Published 4 Apr 2023 Updated 18 Feb 2025

A buffer overflow in the Nginx NJS library allows remote attackers to execute arbitrary code via the njs_module_read function.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2020-19692?

CVE-2020-19692 is a critical memory corruption vulnerability in n/a, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer Overflow vulnerabilty found in Nginx NJS v.0feca92 allows a remote attacker to execute arbitrary code via the njs_module_read in the njs_module.c file.

Weakness: CWE-120

Which versions are affected by CVE-2020-19692?

It affects 1 product.

Products include F5 Njs.

How do I fix CVE-2020-19692?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-19692 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-19692 exists.

Sources

Also known as AZL-26030, GHSA-87wc-7p2c-x5h9.