Exploitable Denial of Service Vulnerability in Oracle Solaris Services
CVE-2026-91256

7.1HIGH

Key Information:

Vendor

Oracle
Status
Oracle Solaris
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91256?

A vulnerability exists within the Services component of Oracle Solaris that can be exploited by a low-privileged attacker with network access via HTTP. This security flaw can lead to significant disruptions, including unauthorized access to certain accessible data, as well as causing Oracle Solaris to hang or repeatedly crash, resulting in a denial of service condition. Effective remediation measures should be employed to mitigate the risks associated with this vulnerability, ensuring the integrity and availability of affected systems.

Affected Version(s)

Oracle Solaris 11.4

References

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

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.