What’s Vulnerable › Vulnerabilities

CVE-2011-5124

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 54.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2012-08-26 · updated 2026-06-16
• Weakness: CWE-119

Description

Stack-based buffer overflow in the BCAAA component before build 60258, as used by Blue Coat ProxySG 4.2.3 through 6.1 and ProxyOne, allows remote attackers to execute arbitrary code via a large packet to the synchronization port (16102/tcp).

Affected products

• Bluecoat Proxyone: all versions
• Bluecoat Proxysg: 4.2.6, 4.3.2.3, 5.1, 5.1.6.1, 5.2, 5.2.2.4 (+6)

References

• https://kb.bluecoat.com/index?page=content&id=SA55
• https://kb.bluecoat.com/index?page=content&id=SA55

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