UBUNTU-CVE-2025-11680

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    UBUNTU-CVE-2025-11680

    Published: 20 Oct 2025Last Modified: 12 Feb 2026
    Upstream:
    CVE-2025-11680

    Summary:

    Details: Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.

    References: https://ubuntu.com/security/CVE-2025-11680, https://www.cve.org/CVERecord?id=CVE-2025-11680, https://libwebsockets.org/git/libwebsockets/commit?id=2b715249f39291c86443b969a1088d59b6a89b78, https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11680

    Affected packages

    Package

    Name: libwebsockets

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.2.2-1

    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
    UBUNTU-CVE-2025-11680 | CVE-DB