What’s Vulnerable › Vulnerabilities

CVE-2021-27463

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% 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-539

Description

A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The affected applications utilize persistent cookies where the session cookie attribute is not properly invalidated, allowing an attacker to intercept the cookies and gain access to sensitive information.

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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