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CVE-2021-27408

24
FAUCET Score

CVE-2021-27408 is an out-of-bounds read vulnerability affecting various Welch Allyn medical device management tools and vital signs monitors, including Welch Allyn Service Tool, Connex Device Integration Suite, and Connex Vital Signs Monitor, among others. This vulnerability has a CVSS score of 7.5 (High) and could lead to information leakage. If chained with an out-of-bounds write vulnerability, it could result in arbitrary code execution. The attack vector is network-based with low attack complexity, requiring no user interaction or privileges. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.8.6CPE matchmatch criteria
cpe:2.3:a:hillrom:connex_central_station:*:*:*:*:*:*:*:*
< 5.3CPE matchmatch criteria
cpe:2.3:a:hillrom:connex_device_integration_suite_network_connectivity_engine:*:*:*:*:*:*:*:*
< 2.43.02CPE matchmatch criteria
cpe:2.3:a:hillrom:connex_integrated_wall_system:*:*:*:*:*:*:*:*
< 1.52CPE matchmatch criteria
cpe:2.3:a:hillrom:connex_spot_monitor:*:*:*:*:*:*:*:*
< 2.43.02CPE matchmatch criteria
cpe:2.3:a:hillrom:connex_vital_signs_monitor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 57th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsma-21-152-01
MitigationThird Party AdvisoryUS Government Resource