How severe is CVE-2021-20841?

CVE-2021-20841 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-20841 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20841?

CVE-2021-20841 affects Ec-cube. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20841?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20841 published?

CVE-2021-20841 was published on 2021-11-24 and last updated on 2026-06-17.

CVE-2021-20841

CVE-2021-20841 is a medium-severity vulnerability in Ec-cube with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ec-cube
Published: 2021-11-24
Last modified: 2026-06-17

Description

Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.

Frequently asked questions

What is CVE-2021-20841?: Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.
How severe is CVE-2021-20841?: CVE-2021-20841 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-20841 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20841?: CVE-2021-20841 affects Ec-cube. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20841?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20841 published?: CVE-2021-20841 was published on 2021-11-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*

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