How severe is CVE-2009-4479?

CVE-2009-4479 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-4479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4479?

CVE-2009-4479 affects Mailsite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-4479 published?

CVE-2009-4479 was published on 2009-12-30 and last updated on 2026-06-16.

CVE-2009-4479

CVE-2009-4479 is a high-severity vulnerability in Mailsite with a CVSS 2.0 base score of 7.8. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Mailsite
Published: 2009-12-30
Last modified: 2026-06-16

Description

LDAP3A.exe in MailSite 8.0.4 allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) via unspecified vectors, as demonstrated by a certain module in VulnDisco Pack Professional 7.13 through 8.11. NOTE: as of 20091229, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.

Frequently asked questions

What is CVE-2009-4479?: LDAP3A.exe in MailSite 8.0.4 allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) via unspecified vectors, as demonstrated by a certain module in VulnDisco Pack Professional 7.13 through 8.11. NOTE: as of 20091229, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.
How severe is CVE-2009-4479?: CVE-2009-4479 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-4479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4479?: CVE-2009-4479 affects Mailsite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-4479 published?: CVE-2009-4479 was published on 2009-12-30 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mailsite:mailsite:8.0.4:*:*:*:*:*:*:*

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