CVE-2026-91537 Oracle Solaris - Privilege Escalation

Oracle Solaris 11.4 contains a privilege escalation vulnerability in Utility component, letting low privileged logged-in attackers take over the system, exploit requires attacker to have logon access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation, Information Disclosure, Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest available version beyond 11.4.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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