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Vulnerability record · CVE-2015-8597 · published 8 January 2016

CVE-2015-8597: Bluecoat proxysg vulnerability

Bluecoat · Proxysg

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 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a base64-encoded URL in conjunction with a "clear text" one in a coaching page, as demonstrated by "http://www.%humbug-URL%.local/bluecoat-splash-API?%BASE64-URL%."

7.4 CVSS 3.0 High EPSS 1.9% · top 20.9%
7.4CVSS 3.0 base score, v2 5.8
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a base64-encoded URL in conjunction with a "clear text" one in a coaching page, as demonstrated by "http://www.%humbug-URL%.local/bluecoat-splash-API?%BASE64-URL%."

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://knowitsecure.se/2015/12/18/knowit-secure-sakrar-bluecoat/ Exploit
http://www.securitytracker.com/id/1034506
https://bto.bluecoat.com/security-advisory/sa107 Vendor Advisory
http://knowitsecure.se/2015/12/18/knowit-secure-sakrar-bluecoat/ Exploit
http://www.securitytracker.com/id/1034506
https://bto.bluecoat.com/security-advisory/sa107 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-5124Blue Coat ProxySG BCAAA stack buffer overflow via sync portThe BCAAA component used by Blue Coat ProxySG 4.2.3 through 6.1 and ProxyOne contains a stack-based buffer overflow that is triggered by a large pack…EPSS 55%analysed9.3CVE-2010-5189Bluecoat sgos permissions and access controls vulnerabilityBlue Coat ProxySG before SGOS 4.3.4.1, 5.x before SGOS 5.4.5.1, 5.5 before SGOS 5.5.4.1, and 6.x before SGOS 6.1.1.1 allows remote authenticated user…EPSS 1.8%7.5CVE-2016-6594Bluecoat advanced secure gateway vulnerabilityBlue Coat Advanced Secure Gateway 6.6, CacheFlow 3.4, ProxySG 6.5 and 6.6 allows remote attackers to bypass blocked requests, user authentication, an…EPSS 1.3%7.5CVE-2004-0079Cisco firewall services module null pointer dereference vulnerabilityThe do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) vi…EPSS 9.5%7.2CVE-2016-9091Bluecoat advanced secure gateway os command injection vulnerabilityBlue 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 inje…EPSS 10%7.1CVE-2013-5959Bluecoat proxysgos memory buffer overflow vulnerabilityBlue Coat ProxySG before 6.2.14.1, 6.3.x, 6.4.x, and 6.5 before 6.5.2 allows remote attackers to cause a denial of service (memory consumption and dr…EPSS 1.5%5.8CVE-2009-1211Bluecoat proxysg va-10 vulnerabilityBlue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote att…EPSS 1.4%5.0CVE-2010-5190Bluecoat sgos permissions and access controls vulnerabilityThe Active Content Transformation functionality in Blue Coat ProxySG before SGOS 4.3.4.2, 5.x before SGOS 5.4.5.1, 5.5 before SGOS 5.5.4.1, and 6.x b…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2015-8597), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.