What is CVE-2021-42540?

CVE-2021-42540 is a high-severity vulnerability in Emerson Wirelesshart Gateway, classified under Write-what-where Condition. CVSS score: 8.0/10. Published 2021-10-22.

How severe is CVE-2021-42540?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in Emerson Wirelesshart Gateway

CVE-2021-42540

The affected product is vulnerable to a unsanitized extract folder for system configuration. A low-privileged user can leverage this logic to overwrite the settings and other key functionality.

EPSS: 0.002 (44.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Emerson Wirelesshart Gateway — versions 1410, 1410D, 1420

Weakness classification (CWE)

CWE-123 — Write-what-where Condition

References

us-cert.cisa.gov/ics/advisories/icsa-21-278-02 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-42540?: CVE-2021-42540 is a high-severity vulnerability in Emerson Wirelesshart Gateway, classified under Write-what-where Condition. CVSS score: 8.0/10. Published 2021-10-22.
How severe is CVE-2021-42540?: High severity. CVSS v3 base score is 8.0 out of 10.