CVE-2022-45494

Name: CVE-2022-45494
Creator: NVD / NIST
Published: 2023-01-31T22:15:08.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2022-45494 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.41%

33.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Json.H Project	Json.H	< 2022-11-14

References

https://github.com/hyrathon/trophies/security/advisories/GHSA-wvpq-p7pp-cj6mExploit, Third Party Advisory
https://github.com/sheredom/json.hProduct, Third Party Advisory
https://github.com/sheredom/json.h/issues/93Issue Tracking, Patch, Third Party Advisory
https://github.com/sheredom/json.h/issues/97Issue Tracking, Patch, Third Party Advisory
https://github.com/hyrathon/trophies/security/advisories/GHSA-wvpq-p7pp-cj6mExploit, Third Party Advisory
https://github.com/sheredom/json.hProduct, Third Party Advisory
https://github.com/sheredom/json.h/issues/93Issue Tracking, Patch, Third Party Advisory
https://github.com/sheredom/json.h/issues/97Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Jan 31, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-45494?

How severe is CVE-2022-45494?

CVE-2022-45494 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2022-45494?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-45494?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST