CVE-2026-116573

    Dashboard / Vulnerabilities / CVE-2026-116573

    CVE-2026-116573

    Published: 5 Nov 2026Last Modified: 7 Nov 2026

    Summary: FreeSWITCH mod_sofia: stack buffer overflow from an over-long SIP To-header user

    Details: FreeSWITCH is an open-source software telecommunications platform. From 1.10.0 until 1.11.1, a stack-based buffer overflow in  mod_sofia  when generating dialog-event notifications. A peer can establish a dialog with an excessively long SIP To-header user part and subsequently subscribe to that entity’s dialog events, causing the stored value to overflow a fixed-size stack buffer. Exploitation requires presence or shared-appearance management to be enabled and normally requires valid profile credentials, unless subscription authentication is disabled. The overflow can terminate the FreeSWITCH process and all active calls. This vulnerability is fixed in version 1.11.2.

    References: https://github.com/signalwire/freeswitch/releases/tag/v1.11.2, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116573.json, https://github.com/signalwire/freeswitch/security/advisories/GHSA-6368-jw63-r8g2, https://nvd.nist.gov/vuln/detail/CVE-2026-116573, https://github.com/signalwire/freeswitch/commit/49f39c074a5bf81c754619e37ec9e39f2407101f

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3f13ad1b1d323e435757fc43a2bb829d4ea5b9a8

    Affected versions

    v1.11.1
    v1.11.0

    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-2026-116573 | CVE-DB