Published Aug 30, 2024Sources checked Nov 11, 2026
7.5HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2024-45490 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Aug 12, 2026
CBL-Mariner Releases
Vendor-listed releases
2.6.3-1
CISA KEVNot listedBased on the latest collected catalog
EPSS1.7%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2024-45490?
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.