CVE-2021-4190 (GCVE-0-2021-4190)
Vulnerability from cvelistv5 – Published: 2021-12-30 00:00 – Updated: 2025-11-03 21:45
VLAI
EPSS
VEX
Summary
Large loop in the Kafka dissector in Wireshark 3.6.0 allows denial of service via packet injection or crafted capture file
Severity
7.5 (High)
CWE
- Excessive iteration in Wireshark
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
=3.6.0
|
guessed |
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T10:23:01+00:00",
"cve": "CVE-2021-4190",
"id": "CVE-2021-4190",
"initial_release_date": "2021-12-29T00:00:00+00:00",
"product_status:known_affected": "4",
"product_status:known_not_affected": "12",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "wireshark: Kafka dissector infinite loop",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-4190.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T02:09:33Z",
"cve": "CVE-2021-4190",
"id": "CVE-2021-4190",
"initial_release_date": "2023-02-15T03:47:47Z",
"product_status:known_affected": "109",
"product_status:known_not_affected": "50",
"product_status:recommended": "666",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-4190",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-4190.json",
"version": "24"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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