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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2016-6367

Exploited

Cisco Adaptive Security Appliance (ASA) Software - CLI

Cisco CVSS 7.8 Updated April 30, 2026

Executive Risk Summary

"A local privilege escalation vulnerability exists in Cisco Adaptive Security Appliance (ASA) Software, allowing attackers to gain elevated privileges via invalid CLI commands. This vulnerability affects ASA 5500, ASA 5500-X, PIX, and FWSM devices running software versions prior to 8.4(1)."

Anticipated Attack Path

  1. 1. Initial Exploitation: Local attacker sends invalid CLI commands to the ASA device
  2. 2. Privilege Escalation: Attacker gains elevated privileges on the device
  3. 3. Post-Exploitation: Attacker can perform unauthorized actions, such as modifying device configurations or accessing sensitive data

Am I Vulnerable?

  • Verify the ASA software version and ensure it is updated to 8.4(1) or later
  • Monitor device logs for suspicious CLI activity
  • Restrict access to the device and limit privileges for local users

Operational Audit Arsenal

Target Type Process
Target Asset cli.exe
Standard Path /usr/local/bin

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Potential disruption to network traffic and device functionality during the update process

Internal Work Notes

CVE-2016-6367: Local Privilege Escalation Vulnerability in Cisco ASA Software - CLI. Update to 8.4(1) or later and restrict local user access.

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Intelligence Sources

Related Cisco Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.