How severe is CVE-2013-3386?

CVE-2013-3386 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2013-3386 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3386?

CVE-2013-3386 primarily affects Cisco Ironport Asyncos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3386?

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-2013-3386 published?

CVE-2013-3386 was published on 2013-06-27 and last updated on 2026-06-16.

CVE-2013-3386

CVE-2013-3386 is a high-severity vulnerability in Cisco Ironport Asyncos 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% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ironport Asyncos
Published: 2013-06-27
Last modified: 2026-06-16

Description

The IronPort Spam Quarantine (ISQ) component in the web framework in IronPort AsyncOS on Cisco Email Security Appliance devices before 7.1.5-106 and 7.3, 7.5, and 7.6 before 7.6.3-019 and Content Security Management Appliance devices before 7.9.1-102 and 8.0 before 8.0.0-404 allows remote attackers to cause a denial of service (service crash or hang) via a high rate of TCP connection attempts, aka Bug IDs CSCzv25573 and CSCzv81712.

Frequently asked questions

What is CVE-2013-3386?: The IronPort Spam Quarantine (ISQ) component in the web framework in IronPort AsyncOS on Cisco Email Security Appliance devices before 7.1.5-106 and 7.3, 7.5, and 7.6 before 7.6.3-019 and Content Security Management Appliance devices before 7.9.1-102 and 8.0 before 8.0.0-404 allows remote attackers to cause a denial of service (service crash or hang) via a high rate of TCP connection attempts, aka Bug IDs CSCzv25573 and CSCzv81712.
How severe is CVE-2013-3386?: CVE-2013-3386 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2013-3386 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3386?: CVE-2013-3386 primarily affects Cisco Ironport Asyncos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3386?: 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-2013-3386 published?: CVE-2013-3386 was published on 2013-06-27 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:cisco:ironport_asyncos:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ironport_asyncos:7.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ironport_asyncos:7.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ironport_asyncos:7.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ironport_asyncos:7.9:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ironport_asyncos:8.0:*:*:*:*:*:*:*

More vulnerabilities in Cisco Ironport Asyncos

CVE-2013-3384 — Critical (CVSS 9.0): The web framework in IronPort AsyncOS on Cisco Web Security Appliance devices before 7.1.3-013, 7.5 before 7.5.0-838,…
CVE-2013-3383 — Critical (CVSS 9.0): The web framework in IronPort AsyncOS on Cisco Web Security Appliance devices before 7.1.3-013, 7.5 before 7.5.0-838,…
CVE-2014-2119 — High (CVSS 8.5): The End User Safelist/Blocklist (aka SLBL) service in Cisco AsyncOS Software for Email Security Appliance (ESA) before…
CVE-2013-3385 — High (CVSS 7.8): The management GUI in the web framework in IronPort AsyncOS on Cisco Web Security Appliance devices before 7.1.3-013,…
CVE-2014-3289 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in the web management interface in Cisco AsyncOS on the Email Security…
CVE-2009-1162 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in the Spam Quarantine login page in Cisco IronPort AsyncOS before 6.5.2 on…

All CVEs affecting Cisco Ironport Asyncos →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →