#VU96897 Buffer Underwrite ('Buffer Underflow') in expat - CVE-2024-45490
Published: September 5, 2024 / Updated: May 20, 2025
Vulnerability identifier: #VU96897
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2024-45490
CWE-ID: CWE-124
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
expat
expat
Software vendor:
libexpat.org
libexpat.org
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error in xmlparse.c when handling negative length for XML_ParseBuffer. A remote attacker can pass specially crafted input to the application, trigger buffer underflow and execute arbitrary code on the system.
Remediation
Install updates from vendor's website.