What is CVE-2016-1380?

CVE-2016-1380 is a high-severity vulnerability in Cisco Web Security Appliance, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-25.

How severe is CVE-2016-1380?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Cisco Web Security Appliance

CVE-2016-1380

Cisco AsyncOS 8.0 before 8.0.6-119 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (proxy-process hang) via a crafted HTTP POST request, aka Bug ID CSCuo12171.

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

Published 2016-05-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.8th percentile), scored 2026-10-21.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.001

Affected products

Cisco Web Security Appliance — versions 8.0.0-000, 8.0.5, 8.0.6

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1035908 (vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160518… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1380?: CVE-2016-1380 is a high-severity vulnerability in Cisco Web Security Appliance, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-25.
How severe is CVE-2016-1380?: High severity. CVSS v3 base score is 7.5 out of 10.