CVE-2023-32722 Stack-buffer Overflow in library module zbxjson

Critical 9.6 Published 12 Oct 2023 Updated 3 Nov 2025

A stack-buffer overflow in Zabbix's JSON parsing library allows attackers to execute arbitrary code or cause denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-32722?

CVE-2023-32722 is a critical memory corruption vulnerability in Zabbix Zabbix, published on 12 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The zabbix/src/libs/zbxjson module is vulnerable to a buffer overflow when parsing JSON files via zbx_json_open.

Weakness: CWE-787, CWE-120

Which versions are affected by CVE-2023-32722?

It affects 1 product.

Products include Zabbix Zabbix.

How do I fix CVE-2023-32722?

Apply the vendor's patch.

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

Is CVE-2023-32722 being exploited?

There is no known exploitation of CVE-2023-32722 in the wild and no public exploit code.

All Zabbix Zabbix vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-32722, GHSA-g47w-cvcq-qh23, openSUSE-SU-2024:13341-1.