Fortinet FortiBalancer 400/1000/2000/4000 SSH Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability, which was classified as critical, was found in Fortinet FortiBalancer 400/1000/2000/4000. This affects some unknown processing of the component SSH Authentication Handler. The manipulation with an unknown input leads to a weak authentication vulnerability. CWE is classifying the issue as CWE-287. This is going to have an impact on integrity.

The weakness was disclosed 04/02/2014 with Fortinet as FG-IR-14-010 as confirmed advisory (Website). The advisory is shared at The public release has been coordinated in cooperation with Fortinet. This vulnerability is uniquely identified as CVE-2014-2721 since 04/01/2014. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Applying the patch FBLOS-FortiBalancer-Patch-2014_02.fn is able to eliminate this problem. It is possible to mitigate the problem by applying the configuration setting config t; ssh off; write memory; exit.It is possible to mitigate the weakness by firewalling tcp/22 (ssh). The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 66626), X-Force (92343) and Secunia (SA57673). The entries 12838 and 12839 are pretty similar.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Weak authentication
CWE: CWE-287
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: FBLOS-FortiBalancer-Patch-2014_02.fn
Config: config t; ssh off; write memory; exit
Firewalling: 🔍


04/01/2014 🔍
04/02/2014 +1 days 🔍
04/02/2014 +0 days 🔍
04/02/2014 +0 days 🔍
04/03/2014 +1 days 🔍
04/09/2014 +6 days 🔍
06/16/2021 +2625 days 🔍



Advisory: FG-IR-14-010
Organization: Fortinet
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-2721 (🔍)
SecurityFocus: 66626 - FortiBalancer SSH Access CVE-2014-2721 Security Bypass Vulnerability
Secunia: 57673 - FortiBalancer SSH Access Security Bypass Vulnerability, Less Critical
X-Force: 92343 - FortiBalancer security balancer passwords security bypass, Medium Risk

See also: 🔍


Created: 04/09/2014 11:39 AM
Updated: 06/16/2021 04:14 PM
Changes: (18) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
Complete: 🔍


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