CVE-2016-1909

Exp

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.

Published: 2016-01-15 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-1909 is rated High Exploit Risk (89.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 79.61%, 99th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.06% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-1909

EDB-ID Source Kind Published Link
43386 exploit_db edb 2016-01-09 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-1909

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-20 78.56% 79.61% +1.06%
2 2026-03-08 79.71% 78.56% -1.16%
3 2025-10-11 — 79.71% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-1909

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2016-1909

Affected software / configurations for CVE-2016-1909

Vendor Product Version Raw CPE
fortinet fortios <= 4.3.16 cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios 5.0 cpe:2.3:o:fortinet:fortios:5.0:*:*:*:*:*:*:*
fortinet fortios 5.0.0 cpe:2.3:o:fortinet:fortios:5.0.0:*:*:*:*:*:*:*
fortinet fortios 5.0.1 cpe:2.3:o:fortinet:fortios:5.0.1:*:*:*:*:*:*:*
fortinet fortios 5.0.2 cpe:2.3:o:fortinet:fortios:5.0.2:*:*:*:*:*:*:*
fortinet fortios 5.0.3 cpe:2.3:o:fortinet:fortios:5.0.3:*:*:*:*:*:*:*
fortinet fortios 5.0.4 cpe:2.3:o:fortinet:fortios:5.0.4:*:*:*:*:*:*:*
fortinet fortios 5.0.5 cpe:2.3:o:fortinet:fortios:5.0.5:*:*:*:*:*:*:*
fortinet fortios 5.0.6 cpe:2.3:o:fortinet:fortios:5.0.6:*:*:*:*:*:*:*
fortinet fortios 5.0.7 cpe:2.3:o:fortinet:fortios:5.0.7:*:*:*:*:*:*:*

References for CVE-2016-1909

cvelogic Threat Intelligence