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CVE-2021-37164

CRITICAL
9.8
CVSS Score
Published: August 2, 2021 at 12:47 PM UTC
Updated: June 17, 2026 at 04:00 AM UTC
2 products affected across 1 vendorHMI 3 Control Panel FirmwareHmi-3 Control Panel

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

Description

A buffer overflow issue was discovered in HMI3 Control Panel in Swisslog Healthcare Nexus Panel operated by released versions of software before Nexus Software 7.2.5.7. In the tcpTxThread function, the received data is copied to a stack buffer. An off-by-3 condition can occur, resulting in a stack-based buffer overflow.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

HMI 3 Control Panel Firmware· Swisslog Healthcare
95%
v < 7.2.5.7
Affected range stops below 7.2.5.7, so it looks safe — our inference, not a vendor statement
swisslog-healthcare-hmi-3-control-panel (same device)
Hmi-3 Control Panel· Swisslog Healthcaredevice
80%
All versions

References (4)

x_refsource_MISCBroken Link
Source: [email protected]
https://www.armis.com/PwnedPiper
x_refsource_MISCProduct
Source: [email protected]
https://www.swisslog-healthcare.com
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.swisslog-healthcare.com/-/media/swisslog-healthcare/documents/customer-service/armis-documents/cve-2021-37164-bulletin---off-by-three-stack-overflow-in-tcptxthread.pdf?rev=daf615075c71484c8059c906872a51e6&hash=1FCC1A5D921E231D71E6B95A9AA8B741
x_refsource_MISC
Source: [email protected]
https://www.swisslog-healthcare.com/en-us/customer-care/security-information/cve-disclosures#:~:text=CVE%20Disclosures%20%20%20%20Vulnerability%20Name%20%2C%20%20CVE-2021-37164%20%204%20more%20rows%20

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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