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7.1
CVE-2026-91256: Oracle Solaris 11.4 can be crashed or read
CVE-2026-91256 · published 15 days ago
Summary
A network‑connected Oracle Solaris 11.4 server can be taken over by someone with only low‑level user rights. By sending specially crafted HTTP requests, an attacker could cause the system to stop responding or expose some of its data. Apply the latest security update from Oracle as soon as possible and restrict unnecessary HTTP access to the server.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| oracle corporation | oracle solaris | 11.4 |
Original advisory text
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 attacke...
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).
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Type
CWE-400Uncontrolled Resource Consumption
Timeline
Published20 Oct 2026
Updated4 Nov 2026
First seen20 Oct 2026
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