What is CVE-2018-25164?

CVE-2018-25164 is a high-severity vulnerability in Phpmassmail Eversync, classified under Files or Directories Accessible to External Parties. CVSS score: 7.5/10. Published 2026-03-06.

How severe is CVE-2018-25164?

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

Vulnerability in Phpmassmail Eversync

CVE-2018-25164

EverSync 0.5 contains an arbitrary file download vulnerability that allows unauthenticated attackers to access sensitive files by requesting them directly from the files directory. Attackers can send GET requests to the files directory to download database files like db.sq3 containing application data and credentials.

EPSS: 0.003 (18.4th percentile) — read the EPSS interpretation.

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.

Affected products

Phpmassmail Eversync — versions 0.5

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2018-25164?: CVE-2018-25164 is a high-severity vulnerability in Phpmassmail Eversync, classified under Files or Directories Accessible to External Parties. CVSS score: 7.5/10. Published 2026-03-06.
How severe is CVE-2018-25164?: High severity. CVSS v3 base score is 7.5 out of 10.