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    CVE-2026-91255

    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).

    Published:Oct 20, 2026
    Last Modified:Oct 23, 2026
    EPS:Oct 20, 2026
    EPSS Score:0.00441
    CVSS Score:7.5

    Affected Products

    Vendor
    Oracle
    Product
    Solaris

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-91256 (CVSS 7.1) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version t…
    CVE-2026-91254 (CVSS 7.5) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). The supported version tha…
    CVE-2026-91253 (CVSS 7.8) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). The supported version tha…
    CVE-2026-91252 (CVSS 8.2) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version t…
    CVE-2026-91249 (CVSS 3.3) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Libraries). The supported version …
    CVE-2026-91244 (CVSS 4.7) — Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High