What is CVE-2021-4183?

CVE-2021-4183 is a medium vulnerability published on December 30, 2021. Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file

When was CVE-2021-4183 disclosed?

CVE-2021-4183 was first published in the National Vulnerability Database on December 30, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-4183 actively exploited?

CVE-2021-4183 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-4183?

CVE-2021-4183 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-4183?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-4183, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2021-4183

MEDIUMNVD 5.55.5—

5.5

Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 39.9%
KEV: Not listed

References (14)

cve@gitlabhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.json
cve@gitlabhttps://gitlab.com/wireshark/wireshark/-/issues/17755
cve@gitlabhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/
cve@gitlabhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/
cve@gitlabhttps://security.gentoo.org/glsa/202210-04
cve@gitlabhttps://www.oracle.com/security-alerts/cpuapr2022.html
cve@gitlabhttps://www.wireshark.org/security/wnpa-sec-2021-19.html
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.json
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/wireshark/wireshark/-/issues/17755
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202210-04
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.html
af854a3a-2127-422b-91ae-364da2661108https://www.wireshark.org/security/wnpa-sec-2021-19.html

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CVE-2021-4183

Published

Last Modified

References (14)

Weakness Classification(2)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-4183?

Same CWE

CVE-2021-4183

📅 Published

🔄 Last Modified

🔗 References (14)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-4183?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (14)

Frequently asked(5)

Related CVEs(same CWE)