What is CVE-2017-8051?

CVE-2017-8051 is a critical-severity vulnerability in Tenable Appliance, classified under OS Command Injection. CVSS score: 9.8/10. Published 2017-04-21.

How severe is CVE-2017-8051?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Tenable Appliance

CVE-2017-8051

Tenable Appliance 3.5 - 4.4.0, and possibly prior versions, contains a flaw in the simpleupload.py script in the Web UI. Through the manipulation of the tns_appliance_session_user parameter, a remote attacker can inject arbitrary commands.

Vulnerability class: Command Injection (OS Command Injection)

Published 2017-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.165 (96.9th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.165 · newest: 0.165 · change: 0.000

Affected products

Tenable Appliance — versions 3.4.0, 3.5.0, 3.5.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

vulndb.cyberriskanalytics.com/153135 (Permissions Required)
www.tenable.com/security/tns-2017-07 (Patch, Vendor Advisory)
www.exploit-db.com/exploits/41892/ (Exploit, VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2017-8051?: CVE-2017-8051 is a critical-severity vulnerability in Tenable Appliance, classified under OS Command Injection. CVSS score: 9.8/10. Published 2017-04-21.
How severe is CVE-2017-8051?: Critical severity. CVSS v3 base score is 9.8 out of 10.