How severe is CVE-2006-4310?

CVE-2006-4310 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2006-4310 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4310?

CVE-2006-4310 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4310?

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

When was CVE-2006-4310 published?

CVE-2006-4310 was published on 2006-08-23 and last updated on 2026-06-16.

CVE-2006-4310

CVE-2006-4310 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mozilla Firefox
Published: 2006-08-23
Last modified: 2026-06-16

Description

Mozilla Firefox 1.5.0.6 allows remote attackers to cause a denial of service (crash) via a crafted FTP response, when attempting to connect with a username and password via the FTP URI.

Frequently asked questions

What is CVE-2006-4310?: Mozilla Firefox 1.5.0.6 allows remote attackers to cause a denial of service (crash) via a crafted FTP response, when attempting to connect with a username and password via the FTP URI.
How severe is CVE-2006-4310?: CVE-2006-4310 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2006-4310 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4310?: CVE-2006-4310 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4310?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4310 published?: CVE-2006-4310 was published on 2006-08-23 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:1.5.0.6:*:*:*:*:*:*:*

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