CVE Feed

    Dashboard / CVE / CVE-2026-42409

    CVE-2026-42409

    When an HTTP/2 profile and an iRule containing the HTTP::redirect or HTTP::respond command are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

    Published:May 13, 2026
    Last Modified:May 14, 2026
    EPS:May 13, 2026
    EPSS Score:0.00084
    CVSS Score:7.5

    Affected Products

    Vendor
    F5
    Product
    Big-ip
    Vendor
    F5
    Product
    Big-ip Next Cnf
    Vendor
    F5
    Product
    Big-ip Next For Kubernetes
    Vendor
    F5
    Product
    Big-ip Next Spk

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-66842 (CVSS 8.7) — BIG-IP has a vulnerability where an authenticated user of any role may be able to create administrative user a…
    CVE-2026-63020 (CVSS 2.3) — A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof…
    CVE-2026-59762 (CVSS 8.7) — When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory…
    CVE-2026-40423 (CVSS 8.7) — When a SIP profile is configured on a virtual server, undisclosed traffic can cause the Traffic Management Mic…
    CVE-2026-42930 (CVSS 8.5) — When running in Appliance mode, an authenticated attacker assigned the 'Administrator' role may be able to byp…
    CVE-2026-24464 (CVSS 6.9) — When running in Appliance mode, a directory traversal vulnerability exists in an undisclosed iControl REST end…
    CVE-2026-39458 (CVSS 8.7) — When a BIG-IP is configured with DNS caching (Such as a DNS profile with caching enabled, SSL Orchestrator, A…
    CVE-2026-41959 (CVSS 7.1) — Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) network diagnosti…
    CVE-2026-42406 (CVSS 8.5) — A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at …
    CVE-2026-42058 (CVSS 5.3) — An authenticated attacker's undisclosed requests to BIG-IP iControl REST can lead to an information leak of BI…

    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