Published Sep 22, 2026Sources checked Oct 21, 2026
7.7HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2026-95619 and is rated High severity with a CVSS score of 7.7. 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: Oct 13, 2026
Release Notes
CISA KEVNot listedBased on the latest collected catalog
EPSS0.4%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-95619?
A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library.
This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.