CVE-2025-0893
📋 TL;DR
This vulnerability allows local attackers to escalate privileges on systems running vulnerable versions of Symantec Diagnostic Tool (SymDiag). Attackers could gain elevated system privileges by exploiting improper privilege management in the diagnostic tool. Organizations using SymDiag versions before 3.0.79 are affected.
💻 Affected Systems
- Symantec Diagnostic Tool (SymDiag)
⚠️ 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
An attacker with local access could gain SYSTEM/root privileges, enabling complete system compromise, installation of persistent malware, credential theft, and lateral movement across the network.
Likely Case
Malicious insiders or attackers who gain initial foothold through other means could escalate privileges to bypass security controls, disable security software, and maintain persistence on compromised systems.
If Mitigated
With proper access controls and least privilege principles, impact is limited to systems where users already have local access, though successful exploitation still provides elevated privileges.
🎯 Exploit Status
Exploitation requires local access to the system. The CWE-269 (Improper Privilege Management) suggests the tool may not properly validate or restrict privilege levels during certain operations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.79 or later
Vendor Advisory: https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25417
Restart Required: No
Instructions:
1. Download SymDiag version 3.0.79 or later from Broadcom support portal. 2. Run the installer to update the existing installation. 3. Verify the update completed successfully by checking the version.
🔧 Temporary Workarounds
Remove SymDiag if not needed
WindowsUninstall SymDiag from systems where it is not required for operational purposes
Control Panel > Programs and Features > Uninstall Symantec Diagnostic Tool
Restrict execution permissions
WindowsApply strict access controls to limit who can execute SymDiag
icacls "C:\Program Files\Symantec\SymDiag\*" /deny Users:(RX)
🧯 If You Can't Patch
- Implement strict least privilege principles - ensure users don't have administrative rights unnecessarily
- Monitor for unusual process execution or privilege escalation attempts using endpoint detection tools
🔍 How to Verify
Check if Vulnerable:
Check SymDiag version by running the tool and viewing the version in the interface, or check installed programs in Control PanelCheck Version:
wmic product where name="Symantec Diagnostic Tool" get versionVerify Fix Applied:
Confirm SymDiag version is 3.0.79 or higher after update📡 Detection & Monitoring
Log Indicators:
- Windows Event Logs showing unusual process creation from SymDiag executable
- Security logs showing privilege escalation attempts
Network Indicators:
- Not applicable - local privilege escalation doesn't generate network traffic
SIEM Query:
Process Creation where Image contains "SymDiag" and Parent Process is not expected diagnostic tool