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 supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00303.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
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Enterprise Linux Subscribe
Hummingbird Subscribe
Openshift Subscribe

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

Mitigation 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.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-115455 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2562933 cve-icon cve-icon
https://gcc.gnu.org/cgit/gcc/commit/?id=5d419c69ce2e6b86d7da75f18736904885674219 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-115455 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-115455 cve-icon
History

Fri, 30 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Fri, 30 Oct 2026 07:30:00 +0000

Type Values Removed Values Added
Description 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 supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).
Title Gcc: stack overflow in std::bitset on libstdc++
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-787
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/a:redhat:openshift:5
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-30T07:13:06.547Z

Reserved: 2026-10-22T15:06:48.490Z

Link: CVE-2026-115455

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T08:16:55.463

Modified: 2026-10-30T08:16:55.590

Link: CVE-2026-115455

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-28T15:46:24Z

Links: CVE-2026-115455 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T08:30:08Z

Weaknesses