Is CVE-2021-27463 in the CISA KEV catalog?

No. CVE-2021-27463 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27463?

CVE-2021-27463 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-27463?

CVE-2021-27463 has an EPSS score of 0.90% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-27463?

No published fix for CVE-2021-27463 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-27463

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-539

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.90%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Third-Party Advisory1

us-cert.cisa.gov

Related Vulnerabilities

Other CWE-539 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-30861	High	7.5	1.3%	-	Fix
CVE-2026-35192	Medium	6.5	0.5%	-	Fix
CVE-2025-27673	Critical	9.1	0.5%	-	Fix
CVE-2024-39275	High	8.0	0.4%	-	Fix
CVE-2025-52633	Low	3.1	0.2%	-	-
CVE-2026-24318	Medium	4.2	0.2%	-	-

Embed a live status badge for CVE-2021-27463

Markdown

[![CVE-2021-27463](https://tridentstack.com/cve/badge/CVE-2021-27463.svg)](https://tridentstack.com/cve/CVE-2021-27463)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-27463"><img src="https://tridentstack.com/cve/badge/CVE-2021-27463.svg" alt="CVE-2021-27463"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.