CVE-2002-0401

SMB dissector in Ethereal 0.9.3 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via malformed packets that cause Ethereal to dereference a NULL pointer.

Published: 2002-06-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-0401 is rated Moderate Risk (64/100): CVSS High severity, with high exploitation likelihood (EPSS 7.74%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.92% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2002-0401

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-02 5.82% 7.74% +1.92%
2 2025-03-30 10.33% 5.82% -4.51%
3 2025-03-29 — 10.33% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-0401

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2002-0401

OS Trackers for CVE-2002-0401

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2002-0401

Affected software / configurations for CVE-2002-0401

Vendor Product Version Raw CPE
ethereal ethereal <= 0.9.3 cpe:2.3:a:ethereal:ethereal:*:*:*:*:*:*:*:*
debian debian_linux 2.2 cpe:2.3:o:debian:debian_linux:2.2:*:*:*:*:*:*:*

References for CVE-2002-0401

cvelogic Threat Intelligence