CVE-2026-95619 libstdc++ - Integer Overflow

libstdc++ contains an integer overflow caused by processing large inputs to the C++ new operator, letting attackers cause memory corruption or application instability, exploit requires crafted input.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.36% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Integer Overflow
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-190

Vendor fix

Update to the latest version of libstdc++.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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