Improper authentication in Emerson Rosemount X-STREAM Gas Analyzer
Priority LOW 35CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
Emerson Rosemount X-STREAM Gas AnalyzerX-STREAM enhanced XEGP, XEGK, XEFD, XEXF – all revisions, The affected products are vulnerable to improper authentication for accessing log and backup data, which could allow an attacker with a specially crafted URL to obtain access to sensitive information.
Why it matters now
EPSS 0.01286 70th 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, XEGK, XEFD, XEXF – all revisions | — | No fix listed | CNA |
- Emerson Rosemount X-STREAM Gas Analyzer Vendor— Affected X-STREAM enhanced XEGP, XEGK, XEFD, 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-2020-27254
- 2026-10-03 Alias added: GHSA-3qjx-hh6f-4fvq
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-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
- TI-2021-08950 A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas… CVSS 3.1MEDIUM 5.3
Sources
- CVE-2020-27254 · CVE Program
- CVE-2020-27254 · NVD
- FIRST EPSS
- GHSA-3qjx-hh6f-4fvq · 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