Live › vulnerability › CVE-2026-91255
Go to dashboardA flaw in the Oracle Solaris 11.4 kernel can be triggered over HTTP by an unauthenticated network attacker. The result is a hang or repeatable crash of the whole system, a denial of service with no code execution or data theft stated in the sources.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Systems running Oracle Solaris 11.4 that accept HTTP traffic from the network are the ones exposed, since the sources describe the attack as coming in over HTTP. Hosts with no network-facing HTTP service, or behind a firewall that blocks that traffic, are less exposed. The sources do not say which HTTP service or configuration triggers the flaw.
No product ranges from the sources yet.
uname -v on the host and compare against the Oracle Solaris 11.4 patch level listed in the Oracle Critical Patch Update advisory (unknown from these sources)pkg info entire to see the installed Solaris 11.4 release and SRU levelpkg update to the latest Solaris 11.4 SRU (exact version unknown from these sources)Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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).
This page as .md · .json · in your agent: get_signal("CVE-2026-91255")
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.