CVE-2019-8263

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    CVE-2019-8263

    Published: 5 Mar 2019Last Modified: 10 Mar 2026

    Summary:

    Details: UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206.

    References: https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf, https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf, , https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf, https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-009-ultravnc-access-of-memory-location-after-end-of-buffer/, https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ultravnc-stack-based-buffer-overflow/, https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11, https://www.us-cert.gov/ics/advisories/icsa-20-161-06

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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