How severe is CVE-2018-19646?

CVE-2018-19646 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-19646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19646?

CVE-2018-19646 primarily affects Imperva Securesphere. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-19646?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-19646 published?

CVE-2018-19646 was published on 2018-11-28 and last updated on 2026-06-17.

CVE-2018-19646

CVE-2018-19646 is a critical-severity vulnerability in Imperva Securesphere with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Imperva Securesphere
Published: 2018-11-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-19646?: CVE-2018-19646 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-19646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19646?: CVE-2018-19646 primarily affects Imperva Securesphere. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-19646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-19646 published?: CVE-2018-19646 was published on 2018-11-28 and last updated on 2026-06-17.

References

https://www.exploit-db.com/exploits/45542

Affected products (3)

cpe:2.3:a:imperva:securesphere:13.0.10:*:*:*:*:*:*:*
cpe:2.3:a:imperva:securesphere:13.1.10:*:*:*:*:*:*:*
cpe:2.3:a:imperva:securesphere:13.2.10:*:*:*:*:*:*:*

More vulnerabilities in Imperva Securesphere

CVE-2018-16660 — High (CVSS 8.8): A command injection vulnerability in PWS in Imperva SecureSphere 13.0.0.10 and 13.1.0.10 Gateway allows an attacker…
CVE-2018-5413 — High (CVSS 8.8): Imperva SecureSphere running v13.0, v12.0, or v11.5 allows low privileged users to add SSH login keys to the admin…
CVE-2018-5403 — High (CVSS 8.1): Imperva SecureSphere gateway (GW) running v13, for both pre-First Time Login or post-First Time Login (FTL), if the…
CVE-2018-5412 — High (CVSS 7.8): Imperva SecureSphere running v12.0.0.50 is vulnerable to local arbitrary code execution, escaping sealed-mode.
CVE-2013-4091 — High (CVSS 7.5): The SecureSphere Operations Manager (SOM) Management Server in Imperva SecureSphere 9.0.0.5 does not have an off…
CVE-2013-4095 — Medium (CVSS 6.5): plain/actionsets.html in the SecureSphere Operations Manager (SOM) Management Server in Imperva SecureSphere 9.0.0.5…

All CVEs affecting Imperva Securesphere →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-19188 — Critical (CVSS 10.0): A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The…
CVE-2026-48362 — Critical (CVSS 10.0): ColdFusion is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')…
CVE-2026-16812 — Critical (CVSS 10.0): VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access…
CVE-2026-6516 — Critical (CVSS 10.0): Zohocorp ManageEngine ADAudit Plus versions before 8606 are affected by Unauthenticated Remote code execution due to…
CVE-2026-46339 — Critical (CVSS 10.0): 9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect…
CVE-2026-59726 — Critical (CVSS 10.0): Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment…

Browse all CWE-78 (OS Command Injection) vulnerabilities →