What is CVE-2018-19646?

CVE-2018-19646 is a critical-severity vulnerability in Imperva Securesphere, classified under OS Command Injection. CVSS score: 9.8/10. Published 2018-11-28.

How severe is CVE-2018-19646?

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

RCE in Imperva Securesphere

CVE-2018-19646

The Python CGI scripts in PWS in Imperva SecureSphere 13.0.10, 13.1.10, and 13.2.10 allow remote attackers to execute arbitrary OS commands because command-line arguments are mishandled.

Vulnerability class: Command Injection (OS Command Injection)

Published 2018-11-28 · 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: 0.035 (88.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000

Affected products

Imperva Securesphere — versions 13.0.10, 13.1.10, 13.2.10

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.exploit-db.com/exploits/45542 (VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2018-19646?: CVE-2018-19646 is a critical-severity vulnerability in Imperva Securesphere, classified under OS Command Injection. CVSS score: 9.8/10. Published 2018-11-28.
How severe is CVE-2018-19646?: Critical severity. CVSS v3 base score is 9.8 out of 10.