PatchTheCVECVE-2016-9091: Blue Coat Advanced Secure Gateway (ASG) 6.6 before 6.6.5.4 and Content Analysis System (CAS) 1.3 before 1.3.7.
CVE-2016-9091 is a high-severity flaw (CVSS 7.2) affecting advanced secure gateway, content analysis system software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Blue Coat Advanced Secure Gateway (ASG) 6.6 before 6.6.5.4 and Content Analysis System (CAS) 1.3 before 1.3.7.4 are susceptible to an OS command injection vulnerability. An authenticated malicious administrator can execute arbitrary OS commands with elevated system privileges.
Why this priority
- High severity
- EPSS top 5%: very likely to be exploited
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.2 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 9.6% (top 5%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2017-04-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: Bluecoat ASG 6.6/CAS 1.3 - Local Privilege Escalation (Metasploit)
- Exploit-DB: Bluecoat ASG 6.6/CAS 1.3 - OS Command Injection (Metasploit)
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2016-9091?
advanced secure gateway: upgrade to newer than 6.6.5.2; content analysis system software: upgrade to newer than 1.3.7.3. Exact commands for each OS are on this page.
Is CVE-2016-9091 being exploited?
CVE-2016-9091 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2016-9091 affect?
CVE-2016-9091 affects advanced secure gateway, content analysis system software. Severity is high (CVSS 7.2). Blue Coat Advanced Secure Gateway (ASG) 6.6 before 6.6.5.4 and Content Analysis System (CAS) 1.3 before 1.3.7.4 are susceptible to an OS command injection vulnerability. An authenticated malicious administrator can execute arbitrary OS comm
How urgent is CVE-2016-9091?
Priority 54/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference
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