CVE-2021-27459 — CRITICAL (9.8)

Vulnerability Description

A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The webserver of the affected products allows unvalidated files to be uploaded, which an attacker could utilize to execute arbitrary code.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Emerson	X-Stream Enhanced Xegp Firmware	All versions
Emerson	X-Stream Enhanced Xegp	-
Emerson	X-Stream Enhanced Xegk Firmware	All versions
Emerson	X-Stream Enhanced Xegk	-
Emerson	X-Stream Enhanced Xefd Firmware	All versions
Emerson	X-Stream Enhanced Xefd	-
Emerson	X-Stream Enhanced Xexf Firmware	All versions
Emerson	X-Stream Enhanced Xexf	-

Related Weaknesses (CWE)

CWE-434

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01Third Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01Third Party AdvisoryUS Government Resource

FAQ

What is CVE-2021-27459?

CVE-2021-27459 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The webserver of the affected products allows unvalidated files to be uploaded, which an attacker could...

How severe is CVE-2021-27459?

CVE-2021-27459 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-27459?

Check the references section above for vendor advisories and patch information. Affected products include: Emerson X-Stream Enhanced Xegp Firmware, Emerson X-Stream Enhanced Xegp, Emerson X-Stream Enhanced Xegk Firmware, Emerson X-Stream Enhanced Xegk, Emerson X-Stream Enhanced Xefd Firmware.