What is CVE-2021-42540?

CVE-2021-42540 is a high-severity vulnerability in Emerson Wireless 1410d 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 Wireless 1410d 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.

Published 2021-10-22 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.010 (62.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-123 — Write-what-where Condition

References

us-cert.cisa.gov/ics/advisories/icsa-21-278-02 (US Government Resource, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42540?: CVE-2021-42540 is a high-severity vulnerability in Emerson Wireless 1410d 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.