How severe is CVE-2016-1405?

CVE-2016-1405 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-1405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1405?

CVE-2016-1405 primarily affects Cisco Email Security Appliance. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1405?

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-2016-1405 published?

CVE-2016-1405 was published on 2016-06-08 and last updated on 2026-06-17.

CVE-2016-1405

CVE-2016-1405 is a high-severity vulnerability in Cisco Email Security Appliance with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cisco Email Security Appliance
Published: 2016-06-08
Last modified: 2026-06-17

Description

libclamav in ClamAV (aka Clam AntiVirus), as used in Advanced Malware Protection (AMP) on Cisco Email Security Appliance (ESA) devices before 9.7.0-125 and Web Security Appliance (WSA) devices before 9.0.1-135 and 9.1.x before 9.1.1-041, allows remote attackers to cause a denial of service (AMP process restart) via a crafted document, aka Bug IDs CSCuv78533 and CSCuw60503.

Frequently asked questions

What is CVE-2016-1405?: libclamav in ClamAV (aka Clam AntiVirus), as used in Advanced Malware Protection (AMP) on Cisco Email Security Appliance (ESA) devices before 9.7.0-125 and Web Security Appliance (WSA) devices before 9.0.1-135 and 9.1.x before 9.1.1-041, allows remote attackers to cause a denial of service (AMP process restart) via a crafted document, aka Bug IDs CSCuv78533 and CSCuw60503.
How severe is CVE-2016-1405?: CVE-2016-1405 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-1405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1405?: CVE-2016-1405 primarily affects Cisco Email Security Appliance. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1405?: 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-2016-1405 published?: CVE-2016-1405 was published on 2016-06-08 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:email_security_appliance:9.6.0-042:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:8.8.0-085:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:9.1.0-070:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_appliance:9.5.0-284:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

45.76.188.22 (ipv4-addr)
41.78.27.213 (ipv4-addr)
176.9.105.121 (ipv4-addr)
212.51.58.50 (ipv4-addr)