Is CVE-2015-1571 being actively exploited?

CVE-2015-1571 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2015-1571?

CVE-2015-1571 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2015-1571

MEDIUM · CVSS 4.3EPSS 0.9%EU EUVD

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.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-310
EPSS score: 0.9% (59th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2015-1703)
Published: February 10, 2015
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-1703 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

fortinet / fortios

References

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

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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