CVE-2026-34281

Local Kernel Denial of Service in Oracle Solaris 11.4

Published Apr 21, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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 low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products (scope change). 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

Analysis

Technical impact

A flaw in the Oracle Solaris kernel allows a low‑privileged local user to trigger an unrecoverable crash, causing the operating system to hang or stop responding. The vulnerability does not compromise confidentiality or integrity, but it can make the entire system unavailable until it is restarted. It is classified as a local denial of service attack.

Affected Systems

Oracle Solaris version 11.4 is affected. The flaw resides in the kernel component and can impact other Oracle products that run on the same infrastructure due to scope change.

Risk and Exploitability

The CVSS 3.1 score of 6.5 indicates moderate severity. The EPSS score of <1% shows a very low probability of exploitation in the wild, but because the flaw can be triggered with local logon and low privileges, environments where users have unsecured access remain at risk. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is a local exploitation by a non‑administrator user who can execute code with sufficient privilege to manipulate kernel memory, potentially causing the system to hang or crash.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Oracle Solaris

affected

Version	Status	Constraints
`11.4`	affected	—

Configuration 1 [-]

cpe:2.3:o:oracle:solaris:11.4:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Solaris

Version	Status	Scheme	Platform
`11.4`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Install the latest Oracle Solaris 11.4 security patch that addresses the kernel vulnerability.
Restrict local user privileges and ensure that only trusted users have shell access to the infrastructure.
Monitor kernel logs for panics or crashes and configure alerts or automatic restarts to maintain availability.

Generated by OpenCVE AI on April 28, 2026 at 21:24 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.116% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://www.oracle.com/security-alerts/cpuapr2026.html

History

Apr 28, 2026 9:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Local Kernel Denial of Service in Oracle Solaris 11.4

Apr 27, 2026 8:00 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Low‑Privilege Local Kernel Exploit Causes System DoS in Oracle Solaris 11.4
Weaknesses	CWE-399

Apr 23, 2026 3:15 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:o:oracle:solaris:11.4:::::::*

Apr 22, 2026 3:15 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-400
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Apr 22, 2026 3:00 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Low‑Privilege Local Kernel Exploit Causes System DoS in Oracle Solaris 11.4
Weaknesses		CWE-399

Apr 22, 2026 12:00 AM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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 low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products (scope change). 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).
First Time appeared		Oracle Oracle solaris
CPEs		cpe:2.3:a:oracle:solaris:11.4:::::::*
Vendors & Products		Oracle Oracle solaris
References		https://www.oracle.com/security-alerts/cpuapr2026.html
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H'}`