How severe is CVE-2006-2781?

CVE-2006-2781 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2006-2781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-2781?

CVE-2006-2781 primarily affects Mozilla Seamonkey. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-2781?

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

When was CVE-2006-2781 published?

CVE-2006-2781 was published on 2006-06-02 and last updated on 2026-06-16.

CVE-2006-2781

CVE-2006-2781 is a medium-severity vulnerability in Mozilla Seamonkey with a CVSS 2.0 base score of 6.4. 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-119.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Mozilla Seamonkey
Published: 2006-06-02
Last modified: 2026-06-16

Description

Double free vulnerability in nsVCard.cpp in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.

Frequently asked questions

What is CVE-2006-2781?: Double free vulnerability in nsVCard.cpp in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.
How severe is CVE-2006-2781?: CVE-2006-2781 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2006-2781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-2781?: CVE-2006-2781 primarily affects Mozilla Seamonkey. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-2781?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-2781 published?: CVE-2006-2781 was published on 2006-06-02 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

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