Critical severity · published May 20, 2021
CVE-2021-27459
A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer
9.8
CVSS
1.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
X-stream Enhanced Xefd Firmware · Emerson
All versions, or not specified · source: NVD
XE
X-stream Enhanced Xegk Firmware · Emerson
All versions, or not specified · source: NVD
XE
X-stream Enhanced Xegp Firmware · Emerson
All versions, or not specified · source: NVD
XE
X-stream Enhanced Xexf Firmware · Emerson
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27459
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27459
Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01
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