CVE-2026-123200

    Dashboard / Vulnerabilities / CVE-2026-123200

    CVE-2026-123200

    Published: 5 Nov 2026Last Modified: 7 Nov 2026

    Summary: VRPN through 07.36 Out-of-bounds Write via SENDER_DESCRIPTION/TYPE_DESCRIPTION length index

    Details: VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123200.json, https://nvd.nist.gov/vuln/detail/CVE-2026-123200, https://www.vulncheck.com/advisories/vrpn-through-07.36-out-of-bounds-write-via-sender-description-type-description-length-index, https://github.com/vrpn/vrpn/commit/0da5b0b71e06e8c318a4e674c84caee12251a782, https://github.com/vrpn/vrpn/commit/c893b583d928fd17d756b39271b2eae71766e7f2, https://github.com/vrpn/vrpn, https://github.com/vrpn/vrpn/blob/79deb000cc0b47ae49a80c92c78167c02d8a04d8/vrpn_Connection.C#L4482, https://github.com/vrpn/vrpn/blob/79deb000cc0b47ae49a80c92c78167c02d8a04d8/vrpn_Connection.C#L4554

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0da5b0b71e06e8c318a4e674c84caee12251a782

    Affected versions

    version_07.36

    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-2026-123200 | CVE-DB