What is CVE-2016-1356?

CVE-2016-1356 is a low-severity vulnerability in Cisco Firesight System Software, classified under CWE-255. CVSS score: 3.7/10. Published 2016-03-03.

How severe is CVE-2016-1356?

Low severity. CVSS v3 base score is 3.7 out of 10.

Auth bypass in Cisco Firesight System Software

CVE-2016-1356

Cisco FireSIGHT System Software 6.1.0 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to enumerate valid usernames by measuring timing differences, aka Bug ID CSCuy41615.

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

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Cisco Firesight System Software — versions _6.1.0

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302… (vendor-advisory, Vendor Advisory)
www.securitytracker.com/id/1035189 (vdb-entry)

Frequently asked questions

What is CVE-2016-1356?: CVE-2016-1356 is a low-severity vulnerability in Cisco Firesight System Software, classified under CWE-255. CVSS score: 3.7/10. Published 2016-03-03.
How severe is CVE-2016-1356?: Low severity. CVSS v3 base score is 3.7 out of 10.