How severe is CVE-2016-5662?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Accellion Kiteworks Appliance

CVE-2016-5662

Accellion Kiteworks appliances before kw2016.03.00 use setuid-root permissions for /opt/bin/cli, which allows local users to gain privileges via unspecified vectors.

Published 2016-08-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Accellion Kiteworks Appliance

References

www.kb.cert.org/vuls/id/305607 (US Government Resource, Third Party Advisory, third-party-advisory)
www.securityfocus.com/bid/92662 (vdb-entry)

Frequently asked questions

What is CVE-2016-5662?: CVE-2016-5662 is a high-severity vulnerability in Accellion Kiteworks Appliance. CVSS score: 7.8/10. Published 2016-08-26.
How severe is CVE-2016-5662?: High severity. CVSS v3 base score is 7.8 out of 10.