CVE-2016-1909
Fortinet FortiAnalyzer before 5.0.12 and 5.2.x before 5.2.5; FortiSwitch 3.3.x before 3.3.3; FortiCache 3.0.x before 3.0.8; and FortiOS 4.1.x before 4.1.11, 4.2.x before 4.2.16, 4.3.x before 4.3.17 and 5.0.x before 5.0.8 have a hardcoded passphrase for…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 71.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Fortinet FortiAnalyzer before 5.0.12 and 5.2.x before 5.2.5; FortiSwitch 3.3.x before 3.3.3; FortiCache 3.0.x before 3.0.8; and FortiOS 4.1.x before 4.1.11, 4.2.x before 4.2.16, 4.3.x before 4.3.17 and 5.0.x before 5.0.8 have a hardcoded passphrase for the Fortimanager_Access account, which allows remote attackers to obtain administrative access via an SSH session.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 71.27% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · first 9 January 2016
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- fortinet/fortios
- Source
- cve@mitre.org
EPSS moved from 67.4% on 21 September 2026 to 71.3% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://blog.fortinet.com/post/brief-statement-regarding-issues-found-with-fortios
- http://packetstormsecurity.com/files/135225/FortiGate-OS-5.0.7-SSH-Backdoor.htmlExploit
- http://seclists.org/fulldisclosure/2016/Jan/26Exploit
- http://www.fortiguard.com/advisory/multiple-products-ssh-undocumented-login-vulnerability
- http://www.securitytracker.com/id/1034663
- https://twitter.com/esizkur/status/686842135501508608
- https://www.exploit-db.com/exploits/39224/Exploit
- http://blog.fortinet.com/post/brief-statement-regarding-issues-found-with-fortios
- http://packetstormsecurity.com/files/135225/FortiGate-OS-5.0.7-SSH-Backdoor.htmlExploit
- http://seclists.org/fulldisclosure/2016/Jan/26Exploit
- http://www.fortiguard.com/advisory/multiple-products-ssh-undocumented-login-vulnerability
- http://www.securitytracker.com/id/1034663
- https://twitter.com/esizkur/status/686842135501508608
- https://www.exploit-db.com/exploits/39224/Exploit
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.