CVE-2016-6594
CVE-2016-6594 is a high-severity vulnerability in Bluecoat Advanced Secure Gateway with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-254
- Affected product: Bluecoat Advanced Secure Gateway
- Published:
- Last modified:
Description
Blue Coat Advanced Secure Gateway 6.6, CacheFlow 3.4, ProxySG 6.5 and 6.6 allows remote attackers to bypass blocked requests, user authentication, and payload scanning.
Frequently asked questions
- What is CVE-2016-6594?
- Blue Coat Advanced Secure Gateway 6.6, CacheFlow 3.4, ProxySG 6.5 and 6.6 allows remote attackers to bypass blocked requests, user authentication, and payload scanning.
- How severe is CVE-2016-6594?
- CVE-2016-6594 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2016-6594 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-6594?
- CVE-2016-6594 primarily affects Bluecoat Advanced Secure Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-6594?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2016-6594 published?
- CVE-2016-6594 was published on 2017-06-08 and last updated on 2026-06-17.
References
Affected products (4)
- cpe:2.3:a:bluecoat:advanced_secure_gateway:6.6:*:*:*:*:*:*:*
- cpe:2.3:a:bluecoat:cacheflow:3.4:*:*:*:*:*:*:*
- cpe:2.3:a:bluecoat:proxysg:6.5:*:*:*:*:*:*:*
- cpe:2.3:a:bluecoat:proxysg:6.6:*:*:*:*:*:*:*
More vulnerabilities in Bluecoat Advanced Secure Gateway
- CVE-2015-8597 — High (CVSS 7.4): Open redirect vulnerability in Blue Coat ProxySG 6.5 before 6.5.8.8 and 6.6 and Advanced Secure Gateway (ASG) 6.6 might…
- CVE-2016-9091 — 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…
All CVEs affecting Bluecoat Advanced Secure Gateway →
Other CWE-254 vulnerabilities
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- CVE-2015-3972 — Critical (CVSS 10.0): The web interface on Janitza UMG 508, 509, 511, 604, and 605 devices supports only short PIN values for authentication,…
- CVE-2015-1158 — Critical (CVSS 10.0): The add_job function in scheduler/ipp.c in cupsd in CUPS before 2.0.3 performs incorrect free operations for…
- CVE-2019-15149 — Critical (CVSS 9.8): core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a…
- CVE-2017-8227 — Critical (CVSS 9.8): Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices have a timeout policy to wait for 5 minutes in case 30 incorrect…
- CVE-2016-9568 — Critical (CVSS 9.8): A security design issue can allow an unprivileged user to interact with the Carbon Black Sensor and perform…