TI-2026-82344 Aliases CVE-2026-33924 GHSA-427g-vh98-w9cm

Authenticated RCE in update functionality in Guardian and CMC

LOW 37CWE-78Published 2026-10-29 · Updated 2026-10-29

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Nozomi Networks Guardian and CMC from 0 before 26.4.0 contain two OS command injection flaws in the update installation functionality. The update code does not validate the contents of the update bundle sufficiently, a weakness tracked as CWE-78. An attacker with administrative privileges can supply a crafted update bundle that runs arbitrary commands with root privileges, allowing them to read or modify sensitive data, change the appliance configuration, or shut down the appliance.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01114 66th percentileScored 2026-11-07

Fix Fixed Guardian (Nozomi Networks): 26.4.0CMC (Nozomi Networks): 26.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Nozomi Networks	Guardian	before 26.4.0	26.4.0	Patch available	CNA
Nozomi Networks	CMC	before 26.4.0	26.4.0	Patch available	CNA

Guardian VendorNozomi Networks Affected before 26.4.0 Fixed in 26.4.0 Patch available CNA
CMC VendorNozomi Networks Affected before 26.4.0 Fixed in 26.4.0 Patch available CNA

Remediation

Update Nozomi Networks Guardian and CMC to version 26.4.0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA Guardian (Nozomi Networks) Fixed in 26.4.0
Fix · CNA CMC (Nozomi Networks) Fixed in 26.4.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-29
Nozomi Networks CMC, Guardian 26.4.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-82343 Update bundle signature bypass in Nozomi Networks Guardian and CMCPriority LOW 34
Show all 2 records →

Timeline

2026-10-29 Threatist record created from CVE-2026-33924
2026-10-29 CISA SSVC decision points changed
2026-10-29 Priority changed: MEDIUM → LOW
2026-10-29 Alias added: GHSA-427g-vh98-w9cm

References

Other 1

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

TI-2022-00470 Authenticated RCE on project configuration import in Guardian/CMC before 22.0.0 CVSS 4.0HIGH 8.6
TI-2026-24526 DoS through oversized audit log entries in Guardian/CMC before 26.2.0 CVSS 4.0HIGH 8.7
TI-2023-15926 DoS on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 CVSS 4.0HIGH 8.2
TI-2023-13657 SQL Injection on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 CVSS 4.0CRITICAL 9.2
TI-2024-00196 DoS on IDS parsing of malformed Radius packets in Guardian before 23.4.1 CVSS 4.0HIGH 8.2
TI-2021-08402 Authenticated command injection when changing date settings or hostname in Guardian/CMC before 20.0.7.4 CVSS 4.0HIGH 8.6

See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences