High severity · published Sep 22, 2026
CVE-2026-95619
Gcc: libstdc++ integer overflow in `new` operator
7.7
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-95619
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-95619
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:58503
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:67275
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:89830
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-95619
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2537811
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