How severe is CVE-2002-0401?

CVE-2002-0401 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2002-0401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0401?

CVE-2002-0401 primarily affects Ethereal. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-0401?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2002-0401 published?

CVE-2002-0401 was published on 2002-06-18 and last updated on 2026-06-16.

CVE-2002-0401

CVE-2002-0401 is a high-severity vulnerability in Ethereal with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.5
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Ethereal
Published: 2002-06-18
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2002-0401?: CVE-2002-0401 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2002-0401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0401?: CVE-2002-0401 primarily affects Ethereal. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-0401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2002-0401 published?: CVE-2002-0401 was published on 2002-06-18 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:ethereal:ethereal:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:2.2:*:*:*:*:*:*:*

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