Quick answers
- Is CVE-2026-91537 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91537 being exploited in the wild.
- How severe is CVE-2026-91537?
- High severity, with a CVSS score of 7.8, published 20 October 2026.
- Which products and versions are affected?
- Oracle Solaris 11.4.
- Is there a fix for CVE-2026-91537?
- 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-2026-91537 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-91537?
- Check whether you run Oracle Solaris at an affected version. 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
A local privilege escalation vulnerability exists in Oracle Solaris 11.4's utility component, allowing a low-privileged authenticated attacker to compromise the system with no user interaction required. The vulnerability has a CVSS 3.1 score of 7.8 with impacts to confidentiality, integrity, and availability. Successful exploitation results in complete system takeover.
Affected products
- Oracle Solaris 11.4
Timeline
- 2026-10-20: disclosed