CVE-2026-78135

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    CVE-2026-78135

    Published: 11 Sept 2026Last Modified: 12 Sept 2026

    Summary:

    Details: libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass.

    References: https://github.com/strongswan/strongswan/releases/tag/6.1.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78135.json, https://nvd.nist.gov/vuln/detail/CVE-2026-78135, https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 49ddfe91f0958555a39b1234424967de85b59276
    Fixed -b43f6bfeed34b4afc8a7eb0c0de38e6e70177847

    Affected versions

    6.1.0rc1

    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-2026-78135 | CVE-DB