HIGH

CVE-2020-8438

CVSS v3

7.2

HIGH

EPSS Score

1.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2020-8438 yet.

Full record on NVD

Description

Ruckus ZoneFlex R500 104.0.0.0.1347 devices allow an authenticated attacker to execute arbitrary OS commands via the hidden /forms/nslookupHandler form, as demonstrated by the nslookuptarget=|cat${IFS} substring.

Technical details

Published: 2020-01-29

Frequently asked questions

What is CVE-2020-8438?

Is CVE-2020-8438 actively exploited?

Active exploitation of CVE-2020-8438 has not been confirmed. Its EPSS score was 1.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-8438?

CVE-2020-8438 has a CVSS v3 base score of 7.2 (HIGH severity).

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