What’s Vulnerable › Vulnerabilities

CVE-2018-4012

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-01-03 · updated 2026-06-17
• Weakness: CWE-119

Description

An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability.

Affected products

• Webroot Brightcloud: all versions

References

• https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683

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