CVE-2006-4331

CVE-2006-4331 is a medium-severity vulnerability in Wireshark with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Wireshark
• Published: 2006-08-24
• Last modified: 2026-06-16

Description

Multiple off-by-one errors in the IPSec ESP preference parser in Wireshark (formerly Ethereal) 0.99.2 allow remote attackers to cause a denial of service (crash) via unspecified vectors.

Frequently asked questions

What is CVE-2006-4331?

Multiple off-by-one errors in the IPSec ESP preference parser in Wireshark (formerly Ethereal) 0.99.2 allow remote attackers to cause a denial of service (crash) via unspecified vectors.

How severe is CVE-2006-4331?

CVE-2006-4331 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-4331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4331?

CVE-2006-4331 affects Wireshark. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-4331 published?

CVE-2006-4331 was published on 2006-08-24 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/21597
• http://secunia.com/advisories/21619
• http://secunia.com/advisories/21649
• http://secunia.com/advisories/21682
• http://secunia.com/advisories/21885
• http://secunia.com/advisories/22378
• http://security.gentoo.org/glsa/glsa-200608-26.xml
• http://securitytracker.com/id?1016736
• http://support.avaya.com/elmodocs2/security/ASA-2006-227.htm
• http://www.kb.cert.org/vuls/id/638376
• http://www.mandriva.com/security/advisories?name=MDKSA-2006:152
• http://www.redhat.com/support/errata/RHSA-2006-0658.html
• http://www.securityfocus.com/bid/19690
• http://www.vupen.com/english/advisories/2006/3370
• http://www.wireshark.org/security/wnpa-sec-2006-02.html
• https://exchange.xforce.ibmcloud.com/vulnerabilities/28553
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10125
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14587

Affected products (1)

• cpe:2.3:a:wireshark:wireshark:0.99.2:*:*:*:*:*:*:*

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