CVE-2025-6978
📋 TL;DR
This CVE describes a command injection vulnerability in diagnostics functionality that allows attackers to execute arbitrary commands on affected systems. It affects Arista network devices running vulnerable software versions. Attackers could gain unauthorized access and control over network infrastructure.
💻 Affected Systems
- Arista EOS
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary commands with elevated privileges, potentially leading to network takeover, data exfiltration, or lateral movement.
Likely Case
Unauthorized command execution leading to configuration changes, service disruption, or credential harvesting from affected network devices.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only affecting isolated network segments.
🎯 Exploit Status
Command injection vulnerabilities typically have low exploitation complexity once access is obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Arista advisory for specific fixed versions
Vendor Advisory: https://www.arista.com/en/support/advisories-notices/security-advisory/22535-security-advisory-0123
Restart Required: Yes
Instructions:
1. Review Arista advisory for affected versions 2. Upgrade to recommended fixed version 3. Apply configuration changes if required 4. Restart affected devices
🔧 Temporary Workarounds
Restrict diagnostic access
allLimit access to diagnostic functionality to authorized administrators only
configure terminal
management api http-commands
no protocol https
protocol http
no shutdown
Network segmentation
allIsolate management interfaces from untrusted networks
🧯 If You Can't Patch
- Implement strict access controls to limit who can access diagnostic functionality
- Monitor and log all diagnostic command usage for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check EOS version against affected versions listed in Arista advisoryCheck Version:
show version | include Software image versionVerify Fix Applied:
Verify EOS version matches or exceeds fixed version from advisory📡 Detection & Monitoring
Log Indicators:
- Unusual diagnostic command execution
- Multiple failed authentication attempts to management interfaces
- Unexpected configuration changes
Network Indicators:
- Unusual traffic patterns from management interfaces
- Unexpected outbound connections from network devices
SIEM Query:
source="arista" AND (event_type="diagnostic" OR cmd="diagnostic") AND user!="authorized_admin"