{"id":"CVE-2026-115455","title":"Gcc: stack overflow in std::bitset on libstdc++","summary":"A flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplyin…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","cvssSource":"cna","cwe":["CWE-787"],"vendor":"Red Hat","product":"gcc","affected":["gcc (all versions)","gcc-toolset-15-gcc (all versions)","gcc-toolset-16-gcc (all versions)","mingw-gcc (all versions)","compat-gcc-295","compat-gcc-296","compat-gcc-32","compat-gcc-34","gcc","compat-gcc-32","compat-gcc-34","compat-gcc-44","gcc","gcc","gcc-toolset-14-gcc","gcc-toolset-15-gcc","mingw-gcc","gcc","gcc-toolset-14-gcc","gcc-toolset-15-gcc","gcc-toolset-16-gcc","mingw-gcc","gcc (all versions)","gcc13 (all versions)","openshift/ose-rhel-coreos-8","openshift/ose-rhel-coreos-9","openshift/ose-rhel-coreos-9"],"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T07:13:06.547Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115455","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-115455"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2562933","label":"RHBZ#2562933"},{"url":"https://gcc.gnu.org/cgit/gcc/commit/?id=5d419c69ce2e6b86d7da75f18736904885674219"}],"tags":["cve.org"],"epss":0.00303,"epssPercentile":0.23118,"ingestedAt":"2026-11-03T10:42:03.631Z","slug":"CVE-2026-115455","body":"## Overview\n\nA flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).\n\n## Affected\n\n- `gcc (all versions)`\n- `gcc-toolset-15-gcc (all versions)`\n- `gcc-toolset-16-gcc (all versions)`\n- `mingw-gcc (all versions)`\n- `compat-gcc-295`\n- `compat-gcc-296`\n- `compat-gcc-32`\n- `compat-gcc-34`\n- `gcc`\n- `compat-gcc-32`\n- `compat-gcc-34`\n- `compat-gcc-44`\n- `gcc`\n- `gcc`\n- `gcc-toolset-14-gcc`\n- `gcc-toolset-15-gcc`\n- `mingw-gcc`\n- `gcc`\n- `gcc-toolset-14-gcc`\n- `gcc-toolset-15-gcc`\n- `gcc-toolset-16-gcc`\n- `mingw-gcc`\n- `gcc (all versions)`\n- `gcc13 (all versions)`\n- `openshift/ose-rhel-coreos-8`\n- `openshift/ose-rhel-coreos-9`\n- `openshift/ose-rhel-coreos-9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}