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CVE Record

CVE-2021-37164: A buffer overflow issue was discovered in HMI3 Control Panel in Swisslog Healthcare Nexus Panel operated by...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE affects Swisslog Healthcare Nexus Panel HMI3 Control Panel software before Nexus Software 7.2.5.7. A malformed network message can trigger a stack-based buffer overflow. The public bundle does not provide CVSS, operational impact, or confirmed exploitation evidence.

Executive priority

Prioritize exposure confirmation for healthcare sites using Swisslog Nexus Panel. The technical impact is memory corruption, but business urgency depends on whether affected systems are deployed and reachable.

Technical view

The issue is an off-by-3 stack overflow in the tcpTxThread function. Received data is copied into a stack buffer, and the boundary condition can overflow it. Affected scope is stated as released versions before Nexus Software 7.2.5.7.

Likely exposure

Exposure is likely limited to healthcare environments operating Swisslog Healthcare Nexus Panel HMI3 Control Panel software below Nexus Software 7.2.5.7. Confirm deployments through asset inventory and vendor support records.

Exploitation context

The source bundle references Armis PwnedPiper research but does not include exploit details, exploit availability, CVSS scoring, or active exploitation. CVE is not listed as CISA KEV in the provided data.

Researcher notes

The evidence supports a stack-based buffer overflow caused by an off-by-3 copy condition in tcpTxThread. Missing details include CVSS, required access path, authentication requirements, tested versions, and concrete impact beyond overflow.

Mitigation direction

  • Identify Swisslog Healthcare Nexus Panel HMI3 Control Panel deployments.
  • Verify whether Nexus Software is below version 7.2.5.7.
  • Upgrade to Nexus Software 7.2.5.7 or later if vendor guidance confirms applicability.
  • Review Swisslog Healthcare CVE disclosure and bulletin for supported remediation details.
  • Restrict unnecessary network access to affected control panel interfaces.

Validation and detection

  • Check asset inventory for Swisslog Healthcare Nexus Panel systems.
  • Record installed Nexus Software versions for each identified system.
  • Compare versions against the affected range: before 7.2.5.7.
  • Review network segmentation around affected healthcare operational systems.
  • Monitor vendor advisories for updated impact or remediation guidance.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2021-37164 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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