No exploitation reported

CVE-2020-27254

No exploitation reported by the sources we read.

Published2020-12-21
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2020-12-2118:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-27254?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-27254?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Emerson x-stream enhanced xefd firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Emerson x-stream enhanced xegk firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Emerson x-stream enhanced xegp firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-20-352-01 CISA4 known affected
Emerson Rosemount X-STREAM
X-STREAM enhanced XEGK: all revisions · X-STREAM enhanced XEXF: all revisions · X-STREAM enhanced XEGP: all revisions · +1 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-20-352-01 · 4 productsEmerson recommends users update the firmware of any affected products. A new release that addresses the issues identified in this Cybersecurity Notification impacting the affected products is available. For information on how to obtain the update contact TechSupport.Hasselroth@emerson.com
Mitigation from the vendor CISA ICSA-20-352-01 · 4 productsIn addition, Emerson recommends users of affected products continue to utilize current cybersecurity industry best practices. In the event such infrastructure is not implemented within an end user's network, action should be taken to ensure the affected products are connected to a well-protected ne…

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-287read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2020-12-21
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-27254?

Is CVE-2020-27254 actively exploited?

Active exploitation of CVE-2020-27254 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-27254?

CVE-2020-27254 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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