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    CVE-2026-4942

    IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configuration.

    Published:Jul 17, 2026
    Last Modified:Aug 12, 2026
    EPS:Jul 17, 2026
    EPSS Score:0.00253
    CVSS Score:5.9

    Affected Products

    Vendor
    Ibm
    Product
    I

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-16941 (CVSS 4.3) — IBM i 7.6, 7.5, and 7.4 could allow a remote authenticated attacker to modify certain system messages due to i…
    CVE-2026-17057 (CVSS 6.5) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service and affect data integr…
    CVE-2026-17207 (CVSS 6.5) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service and compromise integri…
    CVE-2026-17255 (CVSS 4.3) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper valida…
    CVE-2026-17259 (CVSS 4.3) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a…
    CVE-2026-17270 (CVSS 4.3) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of service due to a stack-based bu…
    CVE-2026-17273 (CVSS 6.5) — IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a…

    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