CVE-2026-45751

    Dashboard / Vulnerabilities / CVE-2026-45751

    CVE-2026-45751

    Published: 10 Sept 2026Last Modified: 11 Sept 2026

    Summary: Suricata detect/transform: use-after-free in dotprefix transform

    Details: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

    References: https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45751.json, https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx, https://nvd.nist.gov/vuln/detail/CVE-2026-45751, https://redmine.openinfosecfoundation.org/issues/8537

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -534864353e8d6e5d50991546f96e33f547879aec

    Affected versions

    suricata-8.0.4
    suricata-8.0.3
    suricata-8.0.2
    suricata-8.0.1
    suricata-8.0.0

    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
    CVE-2026-45751 | CVE-DB