CVE-2026-91256 — HIGH (7.1)

Vulnerability Description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version that is affected is 11.4. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris and unauthorized read access to a subset of Oracle Solaris accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H).

CVSS Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-400

References

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

FAQ

What is CVE-2026-91256?

CVE-2026-91256 is a vulnerability with a CVSS score of 7.1 (HIGH). Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version that is affected is 11.4. Easily exploitable vulnerability allows low privileged attacker w...

How severe is CVE-2026-91256?

CVE-2026-91256 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91256?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.