What is CVE-2016-1288?

CVE-2016-1288 is a medium-severity vulnerability in Cisco Web Security Appliance, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-03-03.

How severe is CVE-2016-1288?

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

Improper input validation in Cisco Web Security Appliance

CVE-2016-1288

The HTTPS Proxy feature in Cisco AsyncOS before 8.5.3-051 and 9.x before 9.0.0-485 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (service outage) by leveraging certain intranet connectivity and sending a malformed HTTPS request, aka Bug ID CSCuu24840.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-03-03 · 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: 0.017 (76.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Cisco Web Security Appliance — versions 9.0.0-193, 8.5.0-497

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1035163 (vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1288?: CVE-2016-1288 is a medium-severity vulnerability in Cisco Web Security Appliance, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-03-03.
How severe is CVE-2016-1288?: Medium severity. CVSS v3 base score is 5.3 out of 10.