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    CVE-2021-42785

    Buffer Overflow vulnerability in tvnviewer.exe of TightVNC Viewer allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC server.

    Published:Nov 23, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 23, 2021
    EPSS Score:0.00751
    CVSS Score:9.8

    Affected Products

    Vendor
    Tightvnc
    Product
    Tightvnc

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2019-15680 (CVSS 7.5) — TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial…
    CVE-2019-15679 (CVSS 9.8) — TightVNC code version 1.3.10 contains heap buffer overflow in InitialiseRFBConnection function, which can pote…
    CVE-2019-15678 (CVSS 9.8) — TightVNC code version 1.3.10 contains heap buffer overflow in rfbServerCutText handler, which can potentially …
    CVE-2019-8287 (CVSS 9.8) — TightVNC code version 1.3.10 contains global buffer overflow in HandleCoRREBBP macro function, which can poten…
    CVE-2009-0388 (CVSS 10) — Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC ser…
    CVE-2002-1848 (CVSS 2.1) — TightVNC before 1.2.4 running on Windows stores unencrypted passwords in the password text control of the WinV…
    CVE-2002-1511 (CVSS 5) — The vncserver wrapper for vnc before 3.3.3r2-21 uses the rand() function instead of srand(), which causes vncs…
    CVE-2002-0971 (CVSS 4.6) — Vulnerability in VNC, TightVNC, and TridiaVNC allows local users to execute arbitrary code as LocalSystem by u…

    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