A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas…
Priority LOW 26CWE-539Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.009 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Emerson Rosemount X-STREAM Gas Analyzer | X-STREAM enhanced XEGP – all revisions, X-STREAM enhanced XEGK – all revisions, X-STREAM enhanced XEFD – all revisions, X-STREAM enhanced XEXF – all revisions | — | No fix listed | CNA |
- Emerson Rosemount X-STREAM Gas Analyzer Vendor— Affected X-STREAM enhanced XEGP – all revisions, X-STREAM enhanced XEGK – all revisions, X-STREAM enhanced XEFD – all revisions, X-STREAM enhanced XEXF – all revisions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:emerson:x-stream_enhanced_xegp_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Emerson |
| cpe:2.3:h:emerson:x-stream_enhanced_xegp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Emerson |
| cpe:2.3:o:emerson:x-stream_enhanced_xegk_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Emerson |
| cpe:2.3:h:emerson:x-stream_enhanced_xegk:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Emerson |
| cpe:2.3:o:emerson:x-stream_enhanced_xefd_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Emerson |
| cpe:2.3:h:emerson:x-stream_enhanced_xefd:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Emerson |
| cpe:2.3:o:emerson:x-stream_enhanced_xexf_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Emerson |
| cpe:2.3:h:emerson:x-stream_enhanced_xexf:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Emerson |
- cpe:2.3:o:emerson:x-stream_enhanced_xegp_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Emerson
- cpe:2.3:h:emerson:x-stream_enhanced_xegp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Emerson
- cpe:2.3:o:emerson:x-stream_enhanced_xegk_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Emerson
- cpe:2.3:h:emerson:x-stream_enhanced_xegk:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Emerson
- cpe:2.3:o:emerson:x-stream_enhanced_xefd_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Emerson
- cpe:2.3:h:emerson:x-stream_enhanced_xefd:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Emerson
- cpe:2.3:o:emerson:x-stream_enhanced_xexf_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Emerson
- cpe:2.3:h:emerson:x-stream_enhanced_xexf:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Emerson
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27463
- 2026-10-03 Alias added: GHSA-c9w5-6v8f-m5c7
References
More Emerson X-stream Enhanced Xefd Firmware vulnerabilities
- TI-2021-08946 Unrestricted file upload in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1CRITICAL 9.8
- TI-2021-08948 Path traversal in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1HIGH 7.5
- TI-2020-16580 Improper authentication in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1HIGH 7.5
- TI-2021-08944 Broken or risky cryptographic algorithm in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1HIGH 7.5
- TI-2021-08954 Clickjacking in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1MEDIUM 6.1
- TI-2021-08952 Cross-site scripting in Emerson Rosemount X-STREAM Gas Analyzer CVSS 3.1MEDIUM 6.1
Sources
- CVE-2021-27463 · CVE Program
- CVE-2021-27463 · NVD
- FIRST EPSS
- GHSA-c9w5-6v8f-m5c7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences