Quick answers
- Is CVE-2026-95619 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-95619 being exploited in the wild.
- How severe is CVE-2026-95619?
- High severity, with a CVSS score of 7.7, published 22 September 2026.
- Which products and versions are affected?
- GNU libstdc++.
- Is there a fix for CVE-2026-95619?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-95619 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-95619?
- Check whether you run Gnu Libstdc++. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer overflow vulnerability exists in the aligned operator new function of libstdc++ when processing large allocation requests. The overflow causes undersized memory allocation, leading to out-of-bounds writes and potential memory corruption or application instability. Exploitation requires an attacker to control or influence allocation size parameters, typically requiring code execution or unsafe input handling in the calling application.
Affected products
- GNU libstdc++