CVE-2021-27459 File upload in Emerson Rosemount X-STREAM Gas Analyzer

Critical 9.8 Published 20 May 2021 Updated 3 Aug 2024

Attackers can upload unvalidated files to the Emerson Rosemount X-STREAM Gas Analyzer webserver to execute arbitrary code.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-27459?

CVE-2021-27459 is a critical vulnerability in Emerson Rosemount X-STREAM Gas Analyzer, published on 20 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-434

Which versions are affected by CVE-2021-27459?

It affects 4 products.

Products include Emerson X-Stream Enhanced Xefd Firmware, Emerson X-Stream Enhanced Xegk Firmware, Emerson X-Stream Enhanced Xegp Firmware, Emerson X-Stream Enhanced Xexf Firmware.

How do I fix CVE-2021-27459?

No fix has been published for CVE-2021-27459 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-27459 being exploited?

There is no known exploitation of CVE-2021-27459 in the wild and no public exploit code.

Sources

Also known as GHSA-vg6w-cm2v-xcf3.