Is CVE-2021-27410 in the CISA KEV catalog?

No. CVE-2021-27410 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27410?

CVE-2021-27410 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-27410?

CVE-2021-27410 has an EPSS score of 1.86% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27410?

Upgrade connex central station to 1.8.6 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27410

CRITICALEPSS 77th pctl

9.8

CVSS v3

NVD

Description

The affected product is vulnerable to an out-of-bounds write, which may result in corruption of data or code execution on the Welch Allyn medical device management tools (Welch Allyn Service Tool: versions prior to v1.10, Welch Allyn Connex Device Integration Suite – Network Connectivity Engine (NCE): versions prior to v5.3, Welch Allyn Software Development Kit (SDK): versions prior to v3.2, Welch Allyn Connex Central Station (CS): versions prior to v1.8.6, Welch Allyn Service Monitor: versions prior to v1.7.0.0, Welch Allyn Connex Vital Signs Monitor (CVSM): versions prior to v2.43.02, Welch Allyn Connex Integrated Wall System (CIWS): versions prior to v2.43.02, Welch Allyn Connex Spot Monitor (CSM): versions prior to v1.52, Welch Allyn Spot Vital Signs 4400 Device (Spot 4400) / Welch Allyn Spot 4400 Vital Signs Extended Care Device: versions prior to v1.11.00).

CWE-787Out-of-bounds Write

How to fix

Remediation Available

connex central stationNVD

Affected:< 1.8.6Fixed in:1.8.6CVE-2021-27410derived from NVD

connex device integration suite network connectivity engineNVD

Affected:< 5.3Fixed in:5.3CVE-2021-27410derived from NVD

connex integrated wall systemNVD

Affected:< 2.43.02Fixed in:2.43.02CVE-2021-27410derived from NVD

connex spot monitorNVD

Affected:< 1.52Fixed in:1.52CVE-2021-27410derived from NVD

connex vital signs monitorNVD

Affected:< 2.43.02Fixed in:2.43.02CVE-2021-27410derived from NVD

service monitorNVD

Affected:< 1.7.0.0Fixed in:1.7.0.0CVE-2021-27410derived from NVD

service toolNVD

Affected:< 1.10Fixed in:1.10CVE-2021-27410derived from NVD

software development kitNVD

Affected:< 3.2Fixed in:3.2CVE-2021-27410derived from NVD

spot vital signs 4400NVD

Affected:< 1.11.00Fixed in:1.11.00CVE-2021-27410derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.86%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Mitigation1

us-cert.cisa.gov

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

Embed a live status badge for CVE-2021-27410

Markdown

[![CVE-2021-27410](https://tridentstack.com/cve/badge/CVE-2021-27410.svg)](https://tridentstack.com/cve/CVE-2021-27410)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-27410"><img src="https://tridentstack.com/cve/badge/CVE-2021-27410.svg" alt="CVE-2021-27410"></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.

Start free

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.