How severe is CVE-2009-3104?

CVE-2009-3104 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-3104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3104?

CVE-2009-3104 primarily affects Symantec Antivirus. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3104?

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

When was CVE-2009-3104 published?

CVE-2009-3104 was published on 2009-09-08 and last updated on 2026-06-16.

CVE-2009-3104

CVE-2009-3104 is a medium-severity vulnerability in Symantec Antivirus 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Symantec Antivirus
Published: 2009-09-08
Last modified: 2026-06-16

Description

Unspecified vulnerability in Symantec Norton AntiVirus 2005 through 2008; Norton Internet Security 2005 through 2008; AntiVirus Corporate Edition 9.0 before MR7, 10.0, 10.1 before MR8, and 10.2 before MR3; and Client Security 2.0 before MR7, 3.0, and 3.1 before MR8; when Internet Email Scanning is installed and enabled, allows remote attackers to cause a denial of service (CPU consumption and persistent connection loss) via unknown attack vectors.

Frequently asked questions

What is CVE-2009-3104?: Unspecified vulnerability in Symantec Norton AntiVirus 2005 through 2008; Norton Internet Security 2005 through 2008; AntiVirus Corporate Edition 9.0 before MR7, 10.0, 10.1 before MR8, and 10.2 before MR3; and Client Security 2.0 before MR7, 3.0, and 3.1 before MR8; when Internet Email Scanning is installed and enabled, allows remote attackers to cause a denial of service (CPU consumption and persistent connection loss) via unknown attack vectors.
How severe is CVE-2009-3104?: CVE-2009-3104 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3104?: CVE-2009-3104 primarily affects Symantec Antivirus. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3104?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3104 published?: CVE-2009-3104 was published on 2009-09-08 and last updated on 2026-06-16.

References

Affected products (31)

cpe:2.3:a:symantec:antivirus:9.0:*:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:9.0:mr6:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.0:*:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.0:mr1:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.0:mr2:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:*:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:mp1:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:mr4:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:mr5:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:mr6:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.1:mr7:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.2:*:corporate:*:*:*:*:*
cpe:2.3:a:symantec:antivirus:10.2:mr2:corporate:*:*:*:*:*
cpe:2.3:a:symantec:client_security:2.0:*:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:2.0:mr6:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.0:*:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.0:mr1:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.0:mr2:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.1:*:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.1:mr4:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.1:mr5:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.1:mr6:*:*:*:*:*:*
cpe:2.3:a:symantec:client_security:3.1:mr7:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:2005:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:2006:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:2007:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:2008:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:2005:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:2006:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:2007:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:2008:*:*:*:*:*:*:*

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