CRITICAL

CVE-2021-20034

CVSS v3

9.1

CRITICAL

EPSS Score

81.0 %

exploit probability, as of 2026-10-18

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-2021-20034 yet.

Full record on NVD

Description

An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.

Technical details

Published: 2021-09-27
Exploit-DB: EDB-50430

Frequently asked questions

What is CVE-2021-20034?

Is CVE-2021-20034 actively exploited?

Active exploitation of CVE-2021-20034 has not been confirmed. Its EPSS score was 81.0% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-20034?

CVE-2021-20034 has a CVSS v3 base score of 9.1 (CRITICAL severity).

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