How severe is CVE-2020-14472?

CVE-2020-14472 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-2020-14472 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14472?

CVE-2020-14472 primarily affects Draytek Vigor300b Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-14472?

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-2020-14472 published?

CVE-2020-14472 was published on 2020-06-24 and last updated on 2026-06-17.

CVE-2020-14472

CVE-2020-14472 is a critical-severity vulnerability in Draytek Vigor300b 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: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Draytek Vigor300b Firmware
Published: 2020-06-24
Last modified: 2026-06-17

Description

On Draytek Vigor3900, Vigor2960, and Vigor 300B devices before 1.5.1.1, there are some command-injection vulnerabilities in the mainfunction.cgi file.

Frequently asked questions

What is CVE-2020-14472?: On Draytek Vigor3900, Vigor2960, and Vigor 300B devices before 1.5.1.1, there are some command-injection vulnerabilities in the mainfunction.cgi file.
How severe is CVE-2020-14472?: CVE-2020-14472 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-2020-14472 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14472?: CVE-2020-14472 primarily affects Draytek Vigor300b Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-14472?: 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-2020-14472 published?: CVE-2020-14472 was published on 2020-06-24 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:draytek:vigor300b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor3900_firmware:*:*:*:*:*:*:*:*

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