CVE-2021-27408

Name: CVE-2021-27408
Creator: NVD / NIST
Published: 2021-06-11T17:15:10.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.69%

Last modified Jun 17, 2026

CVE-2021-27408 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The affected product is vulnerable to an out-of-bounds read, which can cause information leakage leading to arbitrary code execution if chained to the out-of-bounds write vulnerability 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).. EPSS estimates a 1.69% chance of exploitation in the next 30 days.

Description

The affected product is vulnerable to an out-of-bounds read, which can cause information leakage leading to arbitrary code execution if chained to the out-of-bounds write vulnerability 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).

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.69%

74.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Hillrom	Connex Central Station	< 1.8.6
Hillrom	Connex Device Integration Suite Network Connectivity Engine	< 5.3
Hillrom	Connex Integrated Wall System	< 2.43.02
Hillrom	Connex Spot Monitor	< 1.52
Hillrom	Connex Vital Signs Monitor	< 2.43.02
Hillrom	Service Monitor	< 1.7.0.0
Hillrom	Service Tool	< 1.10
Hillrom	Software Development Kit	< 3.2
Hillrom	Spot Vital Signs 4400	< 1.11.00

References

https://us-cert.cisa.gov/ics/advisories/icsma-21-152-01Mitigation, Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsma-21-152-01Mitigation, Third Party Advisory, US Government Resource

Timeline

Published: Jun 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27408?

How severe is CVE-2021-27408?

CVE-2021-27408 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.69% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27408?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27408?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST