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CVE-2015-1571

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2015-02-10 · updated 2026-06-17
• Weakness: CWE-310

Description

The CAPWAP DTLS protocol implementation in Fortinet FortiOS 5.0 Patch 7 build 4457 uses the same certificate and private key across different customers' installations, which makes it easier for man-in-the-middle attackers to spoof SSL servers by leveraging the Fortinet_Factory certificate and private key. NOTE: FG-IR-15-002 says "The Fortinet_Factory certificate is unique to each device ... An attacker cannot therefore stage a MitM attack.

Affected products

• Fortinet FortiOS (FortiGate): 5.0.7

References

• http://seclists.org/fulldisclosure/2015/Jan/125
• http://www.fortiguard.com/advisory/FG-IR-15-002/
• http://www.security-assessment.com/files/documents/advisory/Fortinet_FortiOS_Multiple_Vulnerabilities.pdf
• http://seclists.org/fulldisclosure/2015/Jan/125
• http://www.fortiguard.com/advisory/FG-IR-15-002/
• http://www.security-assessment.com/files/documents/advisory/Fortinet_FortiOS_Multiple_Vulnerabilities.pdf

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