What is CVE-2016-1338?

CVE-2016-1338 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server Software, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-03-12.

How severe is CVE-2016-1338?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Cisco Telepresence Video Communication Server Software

CVE-2016-1338

Cisco TelePresence Video Communication Server (VCS) X8.5.1 and X8.5.2 allows remote authenticated users to cause a denial of service (VoIP outage) via a crafted SIP message, aka Bug ID CSCuu43026.

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

Published 2016-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.9th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.9% 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: 0.016 · change: -0.000

Affected products

Cisco Telepresence Video Communication Server Software — versions x8.5.1, x8.5.2

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160309… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1338?: CVE-2016-1338 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server Software, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-03-12.
How severe is CVE-2016-1338?: Medium severity. CVSS v3 base score is 6.5 out of 10.