How severe is CVE-2021-45790?

CVE-2021-45790 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-2021-45790 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45790?

CVE-2021-45790 affects Metersphere. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45790?

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-2021-45790 published?

CVE-2021-45790 was published on 2022-09-29 and last updated on 2026-06-17.

CVE-2021-45790

CVE-2021-45790 is a critical-severity vulnerability in Metersphere 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. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Metersphere
Published: 2022-09-29
Last modified: 2026-06-17

Description

An arbitrary file upload vulnerability was found in Metersphere v1.15.4. Unauthenticated users can upload any file to arbitrary directory, where attackers can write a cron job to execute commands.

Frequently asked questions

What is CVE-2021-45790?: An arbitrary file upload vulnerability was found in Metersphere v1.15.4. Unauthenticated users can upload any file to arbitrary directory, where attackers can write a cron job to execute commands.
How severe is CVE-2021-45790?: CVE-2021-45790 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-2021-45790 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45790?: CVE-2021-45790 affects Metersphere. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45790?: 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-2021-45790 published?: CVE-2021-45790 was published on 2022-09-29 and last updated on 2026-06-17.

References

https://github.com/metersphere/metersphere/issues/8653

Affected products (1)

cpe:2.3:a:metersphere:metersphere:1.15.4:*:*:*:*:*:*:*

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