What is CVE-2016-1440?

CVE-2016-1440 is a medium-severity vulnerability in Cisco Web Security Appliance, classified under CWE-399. CVSS score: 5.3/10. Published 2016-07-02.

How severe is CVE-2016-1440?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Cisco Web Security Appliance

CVE-2016-1440

The proxy process on Cisco Web Security Appliance (WSA) devices through 9.1.0-070 allows remote attackers to cause a denial of service (CPU consumption) by establishing an FTP session and then improperly terminating the control connection after a file transfer, aka Bug ID CSCuy43468.

Published 2016-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.013 (68.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Cisco Web Security Appliance — versions 5.6.0-623, 6.0.0-000, 7.1.0

Weakness classification (CWE)

CWE-399

References

www.securitytracker.com/id/1036188 (vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160627… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1440?: CVE-2016-1440 is a medium-severity vulnerability in Cisco Web Security Appliance, classified under CWE-399. CVSS score: 5.3/10. Published 2016-07-02.
How severe is CVE-2016-1440?: Medium severity. CVSS v3 base score is 5.3 out of 10.