What is CVE-2016-6273?

CVE-2016-6273 is a high-severity vulnerability in Citrix License Server. CVSS score: 7.5/10. Published 2016-10-07.

How severe is CVE-2016-6273?

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

Vulnerability in Citrix License Server

CVE-2016-6273

The lmadmin component in Flexera FlexNet Publisher (aka Flex License Manager) before 2015 SP5 and 2016 before R1 SP1, as used by Citrix License Server for Windows before 11.14.0.1 and Citrix License Server VPX before 11.14.0.1, allows remote attackers to cause a denial of service (crash) via a type 2F packet with a '01 19' opcode.

Published 2016-10-07 · 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: 0.018 (77.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

References

www.tenable.com/security/research/tra-2016-29
www.securitytracker.com/id/1037008 (vdb-entry)
support.citrix.com/article/CTX217430 (Vendor Advisory)
www.securityfocus.com/bid/93450 (vdb-entry)

Frequently asked questions

What is CVE-2016-6273?: CVE-2016-6273 is a high-severity vulnerability in Citrix License Server. CVSS score: 7.5/10. Published 2016-10-07.
How severe is CVE-2016-6273?: High severity. CVSS v3 base score is 7.5 out of 10.