Threats / Cisco / CVE-2016-6367
CVE-2016-6367
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Cisco Adaptive Security Appliance (ASA) vulnerability
A CLI parser vulnerability in Cisco ASA allows authenticated local attackers to cause denial of service or execute code via improper command handling.
Verdict
Today item — known-exploited.
Authenticated local attackers can exploit a command-line interface parsing flaw in Cisco ASA to trigger denial of service conditions or achieve code execution through crafted input.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
6 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-24).
Probability (EPSS)
EPSS 0.22583 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Cisco, Adaptive Security Appliance (ASA). Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-77 Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain local access to the ASA device with valid credentials.
Business
An insider or compromised account holder has authenticated access to critical network security infrastructure.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I craft malicious CLI commands that exploit the parser's improper input validation.
Business
The firewall's command processing logic fails to safely handle adversarial input, creating an exploitable weakness.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute my payload to crash the ASA or execute arbitrary code with device privileges.
Business
The organization loses firewall availability or faces complete compromise of network perimeter security controls.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05