CVE-2016-6504

MEDIUM

Wireshark 1.12.x < 1.12.13 - Denial of Service via NCP2222 Dissector NULL Pointer Dereference

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-6504. PoCs published by Chris Benedict.

AI-analyzed exploit summary The provided text describes a null pointer dereference bug in TShark 1.12.9's dissect_nds_request function, discovered via AFL fuzzing. It includes a link to a PoC sample but does not contain executable exploit code.

Description

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.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Chris Benedict · textdosmultiple
https://www.exploit-db.com/exploits/40194

The provided text describes a null pointer dereference bug in TShark 1.12.9's dissect_nds_request function, discovered via AFL fuzzing. It includes a link to a PoC sample but does not contain executable exploit code.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: TShark 1.12.9
No auth needed
Prerequisites: TShark 1.12.9 installation · Malformed network capture file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3648
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/92164
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/40194/
Vendor Advisory x_refsource_confirm
http://www.wireshark.org/security/wnpa-sec-2016-40.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036480
Mailing List mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2016/07/28/3

Scores

CVSS v3 5.9
EPSS 0.0659
EPSS Percentile 93.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (13)
wireshark/wireshark 1.12.0
wireshark/wireshark 1.12.1
wireshark/wireshark 1.12.2
wireshark/wireshark 1.12.3
wireshark/wireshark 1.12.4
wireshark/wireshark 1.12.5
wireshark/wireshark 1.12.6
wireshark/wireshark 1.12.7
wireshark/wireshark 1.12.8
wireshark/wireshark 1.12.9
... and 3 more
Published Aug 06, 2016
Tracked Since Feb 18, 2026