How severe is CVE-2020-26670?

CVE-2020-26670 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-26670 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26670?

CVE-2020-26670 affects Bigtreecms Bigtree Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26670?

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-2020-26670 published?

CVE-2020-26670 was published on 2021-06-01 and last updated on 2026-06-17.

CVE-2020-26670

CVE-2020-26670 is a high-severity vulnerability in Bigtreecms Bigtree Cms with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Bigtreecms Bigtree Cms
Published: 2021-06-01
Last modified: 2026-06-17

Description

A vulnerability has been discovered in BigTree CMS 4.4.10 and earlier which allows an authenticated attacker to execute arbitrary commands through a crafted request sent to the server via the 'Create a New Setting' function.

Frequently asked questions

What is CVE-2020-26670?: A vulnerability has been discovered in BigTree CMS 4.4.10 and earlier which allows an authenticated attacker to execute arbitrary commands through a crafted request sent to the server via the 'Create a New Setting' function.
How severe is CVE-2020-26670?: CVE-2020-26670 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-26670 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26670?: CVE-2020-26670 affects Bigtreecms Bigtree Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26670?: 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-2020-26670 published?: CVE-2020-26670 was published on 2021-06-01 and last updated on 2026-06-17.

References

https://www.exploit-db.com/exploits/48831

Affected products (1)

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

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