How severe is CVE-2023-4666?

CVE-2023-4666 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4666 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4666?

CVE-2023-4666 affects 10web Form Maker. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4666?

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

When was CVE-2023-4666 published?

CVE-2023-4666 was published on 2023-10-16 and last updated on 2026-06-17.

CVE-2023-4666

CVE-2023-4666 is a critical-severity vulnerability in 10web Form Maker with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: 10web Form Maker
Published: 2023-10-16
Last modified: 2026-06-17

Description

The Form Maker by 10Web WordPress plugin before 1.15.20 does not validate signatures when creating them on the server from user input, allowing unauthenticated users to create arbitrary files and lead to RCE

Frequently asked questions

What is CVE-2023-4666?: The Form Maker by 10Web WordPress plugin before 1.15.20 does not validate signatures when creating them on the server from user input, allowing unauthenticated users to create arbitrary files and lead to RCE
How severe is CVE-2023-4666?: CVE-2023-4666 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4666 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4666?: CVE-2023-4666 affects 10web Form Maker. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4666?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-4666 published?: CVE-2023-4666 was published on 2023-10-16 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/c6597e36-02d6-46b4-89db-52c160f418be

Affected products (1)

cpe:2.3:a:10web:form_maker:*:*:*:*:*:wordpress:*:*

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