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    CVE-2016-6504

    epan/dissectors/packet-ncp2222.inc in the NDS dissector in Wireshark 1.12.x before 1.12.13 does not properly maintain a ptvc data structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted packet.

    Published:Aug 6, 2016
    Last Modified:Apr 12, 2025
    EPS:Aug 6, 2016
    EPSS Score:0.02013
    CVSS Score:5.9

    Affected Products

    Vendor
    Wireshark
    Product
    Wireshark

    Exploits

    https://www.exploit-db.com/exploits/40194

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-76929 (CVSS 4.7) — Pcapng file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76928 (CVSS 7.5) — X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76927 (CVSS 4.7) — H.245 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76926 (CVSS 3.1) — BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76891 (CVSS 3.1) — Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76890 (CVSS 3.1) — Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76885 (CVSS 3.1) — Tektronix K12xx file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76924 (CVSS 5.5) — Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76923 (CVSS 5.5) — Bluetooth HFP Profile protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76922 (CVSS 5.5) — Bluetooth BR/EDR FHS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…

    References

    http://openwall.com/lists/oss-security/2016/07/28/3
    http://www.debian.org/security/2016/dsa-3648
    http://www.securityfocus.com/bid/92164
    http://www.securitytracker.com/id/1036480
    http://www.wireshark.org/security/wnpa-sec-2016-40.html
    https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12576
    https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9eacbb4d48df647648127b9258f9e5aeeb0c7d99
    https://www.exploit-db.com/exploits/40194/
    http://openwall.com/lists/oss-security/2016/07/28/3
    http://www.debian.org/security/2016/dsa-3648
    http://www.securityfocus.com/bid/92164
    http://www.securitytracker.com/id/1036480
    http://www.wireshark.org/security/wnpa-sec-2016-40.html
    https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12576
    https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9eacbb4d48df647648127b9258f9e5aeeb0c7d99
    https://www.exploit-db.com/exploits/40194/

    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