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CVE Record

CVE-2021-28372: ThroughTek's Kalay Platform 2.0 network allows an attacker to impersonate an arbitrary ThroughTek (TUTK) de...

ThroughTek's Kalay Platform 2.0 network allows an attacker to impersonate an arbitrary ThroughTek (TUTK) device given a valid 20-byte uniquely assigned identifier (UID). This could result in an attacker hijacking a victim's connection and forcing them into supplying credentials needed to access the victim TUTK device.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-28372 affects ThroughTek's Kalay Platform 2.0 network. If an attacker knows a valid 20-byte device UID, they can impersonate that device, hijack a user's connection, and trick the user into supplying credentials for the real device.

Executive priority

Treat this as a high-priority supplier-platform exposure review, especially for IoT fleets. Business risk depends on whether your devices use Kalay 2.0 and whether vendors have issued fixes or mitigations.

Technical view

The CVE describes an impersonation flaw in the TUTK Kalay 2.0 network. Possession of a valid 20-byte UID is the key precondition. The stated impact is connection hijacking and credential solicitation against a victim TUTK device. The bundle does not provide CVSS, CWE, CPEs, or exact affected device vendors.

Likely exposure

Exposure is most likely where IoT products, apps, or embedded devices depend on ThroughTek/TUTK Kalay 2.0. The source bundle does not identify specific brands, models, or CPEs, so asset confirmation requires vendor or product evidence.

Exploitation context

The bundle does not indicate known active exploitation, and KEV is false. Public references from FireEye/Mandiant and ThroughTek exist, but the provided bundle only states the UID-based impersonation and credential-coercion risk.

Researcher notes

The provided CVE data is sparse: no CVSS vector, CWE, CPEs, fixed versions, or affected downstream vendors. Avoid broad product claims unless confirmed by ThroughTek, Mandiant/FireEye, or a device-vendor advisory.

Mitigation direction

  • Identify products or services using ThroughTek/TUTK Kalay 2.0.
  • Check ThroughTek and device-vendor guidance for supported fixes or configuration changes.
  • Prioritize externally reachable or high-value camera, sensor, and remote-access deployments.
  • Rotate credentials if suspicious connection hijacking or credential prompts occurred.
  • Require vendor confirmation where product dependency on Kalay is unclear.

Validation and detection

  • Inventory devices and apps for ThroughTek, TUTK, or Kalay dependencies.
  • Confirm whether any deployment uses Kalay Platform 2.0 specifically.
  • Review vendor advisories for each confirmed affected product.
  • Check logs and support tickets for unusual credential prompts or connection hijacks.
  • Document uncertainty where vendor, version, or SDK evidence is unavailable.
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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-28372 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
4Source 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

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.