SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2009-3551

Off-by-one error in the dissect_negprot_response function in packet-smb.c in the SMB dissector in Wireshark 1.2.0 through 1.2.2 allows remote attackers to cause a denial of service (application crash) via a file that records a malformed packet trace.

MEDIUM 5.0EPSS 1.55%

Does this matter?

Lower severity and a low EPSS score (1.55%). Track it; it rarely justifies an emergency change on its own.

Description

Off-by-one error in the dissect_negprot_response function in packet-smb.c in the SMB dissector in Wireshark 1.2.0 through 1.2.2 allows remote attackers to cause a denial of service (application crash) via a file that records a malformed packet trace. NOTE: some of these details are obtained from third party information.

CVSS 2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
1.55% probability · 75th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-189
Affected
wireshark/wireshark
Source
secalert@redhat.com
EPSS trend
0%3%5%26 October 2026: 1.55%26 October 202626 October 2026

EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.