#VU75517 NULL pointer dereference in libpng - CVE-2022-3857

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Main Vulnerability Database Vulnerabilities #VU75517

#VU75517 NULL pointer dereference in libpng - CVE-2022-3857

Published: April 26, 2023 / Updated: November 26, 2025


Vulnerability identifier: #VU75517
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-3857
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
libpng
Software vendor:
libpng

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the png_setup_paeth_row() function in pngwutil.c. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

External links