CVE-2021-32934Network attack vector

Camera-feed disclosure via unprotected IOTC traffic

Published May 19, 2022 · Updated Apr 16, 2025

Cleartext transmission in ThroughTek Kalay SDK 3.1.5 and earlier allows remote attackers to read camera audio and video feeds. The IOTC transport path fails to encrypt traffic exchanged between embedded devices and ThroughTek servers. Exposure requires the nossl tag, missing IOTC AuthKey, AVAPI without DTLS, P2PTunnel or RDT, or an affected SDK version.

CVSS severity9.1
Critical
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in ThroughTek Kalay SDK 3.1.5 and earlier allows remote attackers to read camera audio and video feeds. The IOTC transport path fails to encrypt traffic exchanged between embedded devices and ThroughTek servers. Exposure requires the nossl tag, missing IOTC AuthKey, AVAPI without DTLS, P2PTunnel or RDT, or an affected SDK version.

The record

CVE
CVE-2021-32934
Published
May 19, 2022
Updated
Apr 16, 2025
Vendor
ThroughTek
Product
Kalay SDK
Classifications
CWE-319, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All <=3.1.5
  2. Affected versionversion=all with nossl tag
  3. Affected versionversion=firmware using AVAPI module without enabling DTLS mechanism
  4. Affected versionversion=firmware using P2PTunnel or RDT module

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ThroughTek · Kalay SDKversion=All <=3.1.5; version=all with nossl tag; version=firmware using AVAPI module without enabling DTLS mechanism; version=firmware using P2PTunnel or RDT module

Published CVSS scores

9.1CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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