CVE-2022-45494 Memory corruption in n/a

High 7.8 Published 31 Jan 2023 Updated 27 Mar 2025

A buffer overflow in the json_parse_object function allows attackers to execute arbitrary code and escalate privileges.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2022-45494?

CVE-2022-45494 is a high-severity memory corruption vulnerability in n/a, published on 31 Jan 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Buffer overflow vulnerability in function json_parse_object in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.

Weakness: CWE-787

Which versions are affected by CVE-2022-45494?

It affects 1 product.

Products include Json.h Project Json.h.

How do I fix CVE-2022-45494?

No fix has been published for CVE-2022-45494 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2022-45494 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-45494 exists.

Sources

Also known as AZL-74520, GHSA-wvpq-p7pp-cj6m.