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NVD / CVE Program· CNA mitre

CVE-2002-0403: DNS dissector in Ethereal before 0.9.3 allows remote attackers to cause a denial of service (CPU consumption) via a malformed packet that…

MediumCVSS 5.0 · v2.0—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.3% (FIRST EPSS); higher than 84.2% of all records.
  • No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

DNS dissector in Ethereal before 0.9.3 allows remote attackers to cause a denial of service (CPU consumption) via a malformed packet that causes Ethereal to enter an infinite loop.

Published
Jun 18, 2002
Updated
Jun 16, 2026
EPSS
2.3% · 84th percentile
CWE
—

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ethereal groupethereal

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ethereal group ethereal0.9_.0
  • ethereal group ethereal0.9.1
  • ethereal group ethereal0.9.2
  • ethereal group ethereal0.9.3

Same product

ethereal group: all records

Other highest-scoring records for the same primary product.

  • CVE-2006-3632Buffer overflow in Wireshark (aka Ethereal) 0.8.16 to 0.99.0 allows remote attackers to cause a denial of service and possibly execute…
    42Plan
  • CVE-2005-3184Buffer overflow vulnerability in the unicode_to_bytes in the Service Location Protocol (srvloc) dissector (packet-srvloc.c) in Ethereal…
    42Plan
  • CVE-2004-0507Buffer overflow in the MMSE dissector for Ethereal 0.10.1 to 0.10.3 allows remote attackers to cause a denial of service and possibly…
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2000-1174Jan 9, 2001 · Multiple buffer overflows in AFS ACL parser for Ethereal 0.8.13 and earlier allows remote attackers to execute arbitrary commands via a…
    32Monitor
  • ← EarlierCVE-2002-0402Jun 18, 2002 · Buffer overflow in X11 dissector in Ethereal 0.9.3 and earlier allows remote attackers to cause a denial of service (crash) and possibly…
    31Monitor
  • Later →CVE-2002-0404Jun 18, 2002 · Vulnerability in GIOP dissector in Ethereal before 0.9.3 allows remote attackers to cause a denial of service (memory consumption).
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records