CVE-2026-91253 Oracle Solaris - Privilege Escalation

Oracle Solaris 11.4 contains a privilege escalation vulnerability caused by a kernel flaw, letting low privileged logged-in attackers take over the system, exploit requires attacker login.

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
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 Oracle Solaris 11.4 version with security patches.

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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