Login Request a demo
High severity · published Oct 20, 2026
CVE-2026-91255
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel)
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). The supported version that is affected is 11.4. Easily exploitable vulnerability allows unauthenticated 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. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OS
Oracle Solaris · Oracle Corporation
11.4 · source: vendor
Affected product
OS
Oracle Solaris
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91255
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91255
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
More from Oracle Solaris
10.0
CVE-2026-46978
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Remote Administration Daemon)
9.8
CVE-2026-60432
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Image Packaging System)
9.8
CVE-2026-101537
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility)
8.8
CVE-2026-47025
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility)
8.4
CVE-2026-91348
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility)