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No exploitation reportedFix available

CVE-2021-28372

No exploitation reported by the sources we read.

  • Published2021-08-17
  • Fixed in3.1.10
  • WeaknessCWE-290

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2021-08-1722:15CVE publishedNVD

Versions per branch

NVD
Throughtek kalay p2p software development kit
BranchAffectedFixed in
3.1< 3.1.103.1.10

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-21-229-01 CISA5 known affected

    ThroughTek Kalay P2P SDK

    Kalay P2P SDK: Versions 3.1.5 and prior · Kalay P2P SDK: SDK versions with the nossl tag · Kalay P2P SDK: Device firmware using P2PTunnel or RDT module · +2 more

Full record on NVD

Fix

  1. Update Throughtek kalay p2p software development kit to 3.1.10
  2. Mitigation from the vendor CISA ICSA-21-229-01 · 5 productsIf SDK is Version 3.1.10 and above, enable authkey and DTLS.
  3. Mitigation from the vendor CISA ICSA-21-229-01 · 5 productsIf SDK is any version prior to 3.1.10, upgrade library to v3.3.1.0 or v3.4.2.0 and enable authkey/DTLS.
  4. Mitigation from the vendor CISA ICSA-21-229-01 · 5 productsThroughTek recommends device users to avoid accessing their devices from untrusted networks.
  5. Mitigation from the vendor CISA ICSA-21-229-01 · 5 productsAdditional information can be found in the ThroughTek advisory.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
2021-08-17
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-h5gx-r98q-mqhf

Frequently asked questions

What is CVE-2021-28372?

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.

Is CVE-2021-28372 actively exploited?

Active exploitation of CVE-2021-28372 has not been confirmed. Its EPSS score was 2.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-28372?

CVE-2021-28372 has a CVSS v3 base score of 8.3 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

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