How severe is CVE-2020-35606?

CVE-2020-35606 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-2020-35606 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35606?

CVE-2020-35606 affects Webmin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35606?

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-2020-35606 published?

CVE-2020-35606 was published on 2020-12-21 and last updated on 2026-06-17.

CVE-2020-35606

CVE-2020-35606 is a high-severity vulnerability in Webmin with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 28% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Webmin
Published: 2020-12-21
Last modified: 2026-06-17

Description

Arbitrary command execution can occur in Webmin through 1.962. Any user authorized for the Package Updates module can execute arbitrary commands with root privileges via vectors involving %0A and %0C. NOTE: this issue exists because of an incomplete fix for CVE-2019-12840.

Frequently asked questions

What is CVE-2020-35606?: Arbitrary command execution can occur in Webmin through 1.962. Any user authorized for the Package Updates module can execute arbitrary commands with root privileges via vectors involving %0A and %0C. NOTE: this issue exists because of an incomplete fix for CVE-2019-12840.
How severe is CVE-2020-35606?: CVE-2020-35606 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-2020-35606 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35606?: CVE-2020-35606 affects Webmin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35606?: 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-2020-35606 published?: CVE-2020-35606 was published on 2020-12-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*

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