Cyber Resilience

CVE-2021-42540

High

Published: 22 October 2021

Published
22 October 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0022 44.8th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42540 is a high-severity Write-what-where Condition (CWE-123) vulnerability in Emerson Wireless 1410 Gateway Firmware. Its CVSS base score is 8.0 (High).

Operationally, ranked at the 44.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-123

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

emerson
wireless 1410 gateway firmware
≤ 4.7.94
emerson
wireless 1410d gateway firmware
≤ 4.7.94
emerson
wireless 1420 gateway firmware
≤ 4.7.94

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-123

Write-what-where primitives are neutralized when the attacker cannot execute the memory they control.

References