What is CVE-2018-17341?

CVE-2018-17341 is a high-severity vulnerability in Bigtreecms Bigtree Cms, classified under Improper Authentication. CVSS score: 8.1/10. Published 2018-09-23.

How severe is CVE-2018-17341?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Bigtreecms Bigtree Cms

CVE-2018-17341

BigTree 4.2.23 on Windows, when Advanced or Simple Rewrite routing is enabled, allows remote attackers to bypass authentication via a ..\ substring, as demonstrated by a launch.php?bigtree_htaccess_url=admin/images/..\ URI.

Vulnerability class: Broken Authentication

Published 2018-09-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Bigtreecms Bigtree Cms — versions 4.2.23
Microsoft Windows

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

github.com/bigtreecms/BigTree-CMS/issues/345 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-17341?: CVE-2018-17341 is a high-severity vulnerability in Bigtreecms Bigtree Cms, classified under Improper Authentication. CVSS score: 8.1/10. Published 2018-09-23.
How severe is CVE-2018-17341?: High severity. CVSS v3 base score is 8.1 out of 10.