How severe is CVE-2018-17341?

CVE-2018-17341 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17341 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17341?

CVE-2018-17341 affects Bigtreecms Bigtree Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17341?

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

When was CVE-2018-17341 published?

CVE-2018-17341 was published on 2018-09-23 and last updated on 2026-06-17.

CVE-2018-17341

CVE-2018-17341 is a high-severity vulnerability in Bigtreecms Bigtree Cms with a CVSS 3.x base score of 8.1. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Bigtreecms Bigtree Cms
Published: 2018-09-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-17341?: CVE-2018-17341 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17341 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17341?: CVE-2018-17341 affects Bigtreecms Bigtree Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17341?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-17341 published?: CVE-2018-17341 was published on 2018-09-23 and last updated on 2026-06-17.

References

https://github.com/bigtreecms/BigTree-CMS/issues/345

Affected products (1)

cpe:2.3:a:bigtreecms:bigtree_cms:4.2.23:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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