CVE-2021-27457

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-20 · updated 2026-06-17
Weakness: CWE-326

Description

A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The affected products utilize a weak encryption algorithm for storage of sensitive data, which may allow an attacker to more easily obtain credentials used for access.

Affected products

Emerson X-Stream Enhanced Xefd Firmware: all versions
Emerson X-Stream Enhanced Xegk Firmware: all versions
Emerson X-Stream Enhanced Xegp Firmware: all versions
Emerson X-Stream Enhanced Xexf Firmware: all versions

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01
https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01

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