How severe is CVE-2014-8016?

CVE-2014-8016 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-8016 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-8016?

CVE-2014-8016 affects Cisco Ironport Email Security Appliances. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-8016?

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

When was CVE-2014-8016 published?

CVE-2014-8016 was published on 2014-12-19 and last updated on 2026-06-17.

CVE-2014-8016

CVE-2014-8016 is a medium-severity vulnerability in Cisco Ironport Email Security Appliances with a CVSS 2.0 base score of 5.0. 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 5.0)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ironport Email Security Appliances
Published: 2014-12-19
Last modified: 2026-06-17

Description

The Cisco IronPort Email Security Appliance (ESA) allows remote attackers to cause a denial of service (CPU consumption) via long Subject headers in e-mail messages, aka Bug ID CSCzv93864.

Frequently asked questions

What is CVE-2014-8016?: The Cisco IronPort Email Security Appliance (ESA) allows remote attackers to cause a denial of service (CPU consumption) via long Subject headers in e-mail messages, aka Bug ID CSCzv93864.
How severe is CVE-2014-8016?: CVE-2014-8016 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-8016 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-8016?: CVE-2014-8016 affects Cisco Ironport Email Security Appliances. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-8016?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-8016 published?: CVE-2014-8016 was published on 2014-12-19 and last updated on 2026-06-17.

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-8016

Affected products (1)

cpe:2.3:h:cisco:ironport_email_security_appliances:*:*:*:*:*:*:*:*

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