How severe is CVE-2021-44892?

CVE-2021-44892 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-2021-44892 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44892?

CVE-2021-44892 affects Thinkphp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44892?

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-2021-44892 published?

CVE-2021-44892 was published on 2022-02-10 and last updated on 2026-06-17.

CVE-2021-44892

CVE-2021-44892 is a high-severity vulnerability in Thinkphp 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.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Thinkphp
Published: 2022-02-10
Last modified: 2026-06-17

Description

A Remote Code Execution (RCE) vulnerability exists in ThinkPHP 3.x.x via value[_filename] in index.php, which could let a malicious user obtain server control privileges.

Frequently asked questions

What is CVE-2021-44892?: A Remote Code Execution (RCE) vulnerability exists in ThinkPHP 3.x.x via value[_filename] in index.php, which could let a malicious user obtain server control privileges.
How severe is CVE-2021-44892?: CVE-2021-44892 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-2021-44892 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44892?: CVE-2021-44892 affects Thinkphp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44892?: 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-2021-44892 published?: CVE-2021-44892 was published on 2022-02-10 and last updated on 2026-06-17.

References

https://github.com/Stakcery/Web-Security/issues/1

Affected products (1)

cpe:2.3:a:thinkphp:thinkphp:3.2.3:*:*:*:*:*:*:*

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