How severe is CVE-2020-10557?

CVE-2020-10557 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-2020-10557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10557?

CVE-2020-10557 affects Atutor Acontent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10557?

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-2020-10557 published?

CVE-2020-10557 was published on 2020-03-16 and last updated on 2026-06-17.

CVE-2020-10557

CVE-2020-10557 is a high-severity vulnerability in Atutor Acontent 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Atutor Acontent
Published: 2020-03-16
Last modified: 2026-06-17

Description

An issue was discovered in AContent through 1.4. It allows the user to run commands on the server with a low-privileged account. The upload section in the file manager page contains an arbitrary file upload vulnerability via upload.php. The extension .php7 bypasses file upload restrictions.

Frequently asked questions

What is CVE-2020-10557?: An issue was discovered in AContent through 1.4. It allows the user to run commands on the server with a low-privileged account. The upload section in the file manager page contains an arbitrary file upload vulnerability via upload.php. The extension .php7 bypasses file upload restrictions.
How severe is CVE-2020-10557?: CVE-2020-10557 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-2020-10557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10557?: CVE-2020-10557 affects Atutor Acontent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10557?: 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-2020-10557 published?: CVE-2020-10557 was published on 2020-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atutor:acontent:*:*:*:*:*:*:*:*

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