CVE-2012-3826

Multiple integer underflows in Wireshark 1.4.x before 1.4.13 and 1.6.x before 1.6.8 allow remote...

3.3 LowPublic exploitFix available

Multiple integer underflows in Wireshark 1.4.x before 1.4.13 and 1.6.x before 1.6.8 allow remote attackers to cause a denial of service (loop) via vectors related to the R3 dissector, a different vulnerability than CVE-2012-2392.

Exploit likelihood

3.40%Up 2.2 points since Feb 4, 2022

What each source reports

NVD Score used 3.3

Record: CVE-2012-3826
CVSS 2.0: 3.3 LowAV:A/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-189
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-3826
Updated: 2026-11-02

EUVDEUVD-2012-3773 No score

Record: EUVD-2012-3773
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7cq7-rr3p-m677 No score

Multiple integer underflows in Wireshark 1.4.x before 1.4.13 and 1.6.x before 1.6.8 allow remote...

Record: GHSA-7cq7-rr3p-m677
Updated: 2026-11-02

OSV No score

Record: CVE-2012-3826
Updated: 2026-11-02

OSVDEBIAN-CVE-2012-3826 No score

Record: DEBIAN-CVE-2012-3826
Updated: 2026-11-02

Affected products

wireshark

Affected packages

Affected packages
Package	Affected	Fixed
`wireshark` Debian:12	before 1.6.8-1	1.6.8-1
`wireshark` Debian:13	before 1.6.8-1	1.6.8-1
`wireshark` Debian:14	before 1.6.8-1	1.6.8-1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Wireshark - Multiple Dissector Denial of Service Vulnerabilities	2012-05-24

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-3826 is a low vulnerability (CVSS 3.3) in Wireshark, published June 30, 2012. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.40%, the 88th percentile. Fixed in wireshark 1.6.8-1.