What is CVE-2018-8966?

CVE-2018-8966 is a high-severity vulnerability in Zzcms, classified under Code Injection. CVSS score: 7.5/10. Published 2018-03-24.

How severe is CVE-2018-8966?

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

Is CVE-2018-8966 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Zzcms

CVE-2018-8966

An issue was discovered in zzcms 8.2. It allows PHP code injection via the siteurl parameter to install/index.php, as demonstrated by injecting a phpinfo() call into /inc/config.php.

Vulnerability class: RCE (Remote Code Execution)

Published 2018-03-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.018 (77.2th percentile), scored 2026-10-01.

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

Zzcms — versions 8.2

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

References

github.com/Ni9htMar3/vulnerability/blob/master/zzcms_8.2/install.md (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2018-8966?: CVE-2018-8966 is a high-severity vulnerability in Zzcms, classified under Code Injection. CVSS score: 7.5/10. Published 2018-03-24.
How severe is CVE-2018-8966?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-8966 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.