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CVE-2016-6594

19
FAUCET Score

CVE-2016-6594 describes a critical vulnerability in Blue Coat Advanced Secure Gateway, CacheFlow, and ProxySG products (versions 6.5 and 6.6). This flaw allows remote attackers to bypass security controls, including blocked requests, user authentication, and payload scanning, potentially leading to unauthorized access and data manipulation. With a CVSS v3 score of 7.5 (HIGH), the vulnerability is easily exploitable over the network with low attack complexity, resulting in high integrity impact. Despite its severity, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed in the KEV catalog, suggesting no known active exploitation. Community discussion and media coverage for this CVE are also notably absent.

Impacted Technologies

VendorProductVersion(s)CPE
6.6CPE matchmatch criteria
cpe:2.3:a:bluecoat:advanced_secure_gateway:6.6:*:*:*:*:*:*:*
3.4CPE matchmatch criteria
cpe:2.3:a:bluecoat:cacheflow:3.4:*:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:bluecoat:proxysg:6.5:*:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:a:bluecoat:proxysg:6.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 43rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bto.bluecoat.com / security-advisory/sa130
MitigationVendor Advisory
securityfocus.com / bid/91404