CVE-2025-33179
📋 TL;DR
This vulnerability in NVIDIA Cumulus Linux and NVOS allows low-privileged users to execute unauthorized commands through the NVUE interface, potentially leading to privilege escalation. It affects organizations using these networking products with the vulnerable configuration enabled. The vulnerability stems from improper privilege management (CWE-266).
💻 Affected Systems
- NVIDIA Cumulus Linux
- NVIDIA NVOS
📦 What is this software?
Nvos by Nvidia
Nvos by Nvidia
Nvos by Nvidia
⚠️ Risk & Real-World Impact
Worst Case
An attacker with low-privileged access could gain full administrative control over the network device, potentially compromising the entire network infrastructure.
Likely Case
Malicious insiders or compromised low-privileged accounts could escalate privileges to modify network configurations, intercept traffic, or disrupt network operations.
If Mitigated
With proper access controls and network segmentation, impact would be limited to the affected device only.
🎯 Exploit Status
Exploitation requires existing low-privileged access to the NVUE interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Cumulus Linux 5.9.1+, NVOS 10.7.1+
Vendor Advisory: https://nvidia.custhelp.com/app/answers/detail/a_id/5722
Restart Required: Yes
Instructions:
1. Download the latest patch from NVIDIA support portal. 2. Backup current configuration. 3. Apply the patch using standard upgrade procedures. 4. Reboot the device. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Disable NVUE Interface
linuxDisable the NVUE interface if not required for operations
nv set service nvue disable
nv config apply
Restrict NVUE Access
linuxLimit NVUE interface access to administrative users only
configure user access controls via TACACS+/RADIUS or local user management
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices
- Enforce principle of least privilege and monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check current version: nv version | grep -E 'Cumulus|NVOS'Check Version:
nv versionVerify Fix Applied:
Verify version is 5.9.1+ for Cumulus Linux or 10.7.1+ for NVOS📡 Detection & Monitoring
Log Indicators:
- Unauthorized command execution attempts in NVUE logs
- Privilege escalation patterns in system logs
Network Indicators:
- Unusual administrative traffic from non-admin IP addresses
SIEM Query:
source="nvue" AND (event="command_execution" OR event="privilege_change") AND user!="admin"