How severe is CVE-2020-14100?

CVE-2020-14100 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-2020-14100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14100?

CVE-2020-14100 affects Mi R3600 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14100?

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-2020-14100 published?

CVE-2020-14100 was published on 2020-09-11 and last updated on 2026-06-17.

CVE-2020-14100

CVE-2020-14100 is a critical-severity vulnerability in Mi R3600 Firmware 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Mi R3600 Firmware
Published: 2020-09-11
Last modified: 2026-06-17

Description

In Xiaomi router R3600 ROM version<1.0.66, filters in the set_WAN6 interface can be bypassed, causing remote code execution. The router administrator can gain root access from this vulnerability.

Frequently asked questions

What is CVE-2020-14100?: In Xiaomi router R3600 ROM version<1.0.66, filters in the set_WAN6 interface can be bypassed, causing remote code execution. The router administrator can gain root access from this vulnerability.
How severe is CVE-2020-14100?: CVE-2020-14100 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-2020-14100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14100?: CVE-2020-14100 affects Mi R3600 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14100?: 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-2020-14100 published?: CVE-2020-14100 was published on 2020-09-11 and last updated on 2026-06-17.

References

https://privacy.mi.com/trust#/security/vulnerability-management/vulnerability-announcement/detail?id=20&locale=en

Affected products (1)

cpe:2.3:o:mi:r3600_firmware:*:*:*:*:*:*:*:*

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