CVE-2009-1211
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to...
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
Exploit likelihood
What each source reports
NVD Score used
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
- Record
CVE-2009-1211- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:P - Weakness
- CWE-16
- Updated
- 2026-11-02
CVE List No score
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
- Record
CVE-2009-1211- Updated
- 2026-11-02
EUVDEUVD-2009-1210 No score
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
- Record
EUVD-2009-1210- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j749-wjv7-4cf2 No score
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to...
Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
- Record
GHSA-j749-wjv7-4cf2- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-1211 is a medium vulnerability (CVSS 5.8) in Bluecoat Proxysg, published April 1, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.36%, the 71st percentile. No source names a fixed version.