Fortinet FortiOS 5.0 DTLS cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Fortinet FortiOS 5.0 (Firewall Software). This issue affects an unknown part of the component DTLS. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, and integrity.

The weakness was presented 01/29/2015 as File 130161 (Packetstorm). It is possible to read the advisory at The identification of this vulnerability is CVE-2015-1571 since 02/10/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (100632). See 69024 and 74157 for similar entries.






  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍



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Class: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Price Prediction: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


01/29/2015 🔍
02/05/2015 +7 days 🔍
02/10/2015 +5 days 🔍
02/10/2015 +0 days 🔍
03/08/2022 +2583 days 🔍



Advisory: File 130161
Status: Not defined

CVE: CVE-2015-1571 (🔍)
X-Force: 100632 - Fortinet FortiOS DTLS security bypass, Medium Risk

See also: 🔍


Created: 02/05/2015 10:53 AM
Updated: 03/08/2022 12:44 PM
Changes: 02/05/2015 10:53 AM (43), 07/09/2017 08:20 AM (9), 03/08/2022 12:37 PM (3), 03/08/2022 12:44 PM (1)
Complete: 🔍


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