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    CVE-2026-22264

    Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.

    Published:Jan 27, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 27, 2026
    EPSS Score:0.00091
    CVSS Score:7.4

    Affected Products

    Vendor
    Oisf
    Product
    Suricata

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-45769 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45768 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45767 (CVSS 4.4) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45766 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45765 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45764 (CVSS 9.1) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45762 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45761 (CVSS 3.3) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …
    CVE-2026-45759 (CVSS 7.5) — Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring …

    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