Vulnerability in Oracle Solaris Kernel Affects Oracle Systems
CVE-2026-91253

7.8HIGH

Key Information:

Vendor

Oracle
Status
Oracle Solaris
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91253?

A vulnerability affecting Oracle Solaris Kernel allows attackers with low privileges to expose the system to significant risks. If leveraged, this flaw presents a path for unauthorized access and control, potentially leading to a complete takeover of the affected infrastructure. The vulnerability is particularly concerning for environments running Oracle Solaris 11.4, as it can be easily exploited by attackers already equipped with basic logon credentials. It emphasizes the critical need for proactive security measures and timely updates to safeguard against such threats.

Affected Version(s)

Oracle Solaris 11.4

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.