How severe is CVE-2006-6409?

CVE-2006-6409 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2006-6409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-6409?

CVE-2006-6409 affects F-secure F-secure Anti-virus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-6409?

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

When was CVE-2006-6409 published?

CVE-2006-6409 was published on 2006-12-10 and last updated on 2026-06-16.

CVE-2006-6409

CVE-2006-6409 is a critical-severity vulnerability in F-secure F-secure Anti-virus with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: F-secure F-secure Anti-virus
Published: 2006-12-10
Last modified: 2026-06-16

Description

F-Secure Anti-Virus for Linux Gateways 4.65 allows remote attackers to cause a denial of service (possibly fatal scan error), and possibly bypass virus detection, by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.

Frequently asked questions

What is CVE-2006-6409?: F-Secure Anti-Virus for Linux Gateways 4.65 allows remote attackers to cause a denial of service (possibly fatal scan error), and possibly bypass virus detection, by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.
How severe is CVE-2006-6409?: CVE-2006-6409 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2006-6409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6409?: CVE-2006-6409 affects F-secure F-secure Anti-virus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6409?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-6409 published?: CVE-2006-6409 was published on 2006-12-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:f-secure:f-secure_anti-virus:4.65:*:linux_gateways:*:*:*:*:*

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