What is CVE-2018-25016?

CVE-2018-25016 is a critical-severity vulnerability in Greenbone OS, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2021-06-21.

How severe is CVE-2018-25016?

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

Vulnerability in Greenbone OS

CVE-2018-25016

Greenbone Security Assistant (GSA) before 7.0.3 and Greenbone OS (GOS) before 5.0.0 allow Host Header Injection.

Published 2021-06-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

github.com/greenbone/gsa/pull/318 (Patch, Third Party Advisory)
github.com/greenbone/gsa/releases/tag/v7.0.3 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2018-25016?: CVE-2018-25016 is a critical-severity vulnerability in Greenbone OS, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2021-06-21.
How severe is CVE-2018-25016?: Critical severity. CVSS v3 base score is 9.8 out of 10.