PatchTheCVEfortiextender firmware vulnerabilities and fixes
Recent CVEs affecting fortiextender firmware, with upgrade or downgrade steps. 8 tracked.
Also searched as: fortiextenderfirmware.
fortiextender firmware has 8 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 8. Most recent: 2025-12-09. Highest priority: CVE-2025-64153 (score 45/100).
- CVE-2025-46776 MEDIUM 6.4 UPGRADE A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiExtend
- CVE-2025-46775 MEDIUM 5.5 UPGRADE A debug messages revealing unnecessary information vulnerability in Fortinet FortiExtender 7.6.0 through 7.6.1
- CVE-2025-64153 HIGH 7.2 UPGRADE A improper neutralization of special elements used in an os command ('os command injection') in Fortinet Forti
- CVE-2024-23663 HIGH 8.8 UPGRADE An improper access control in Fortinet FortiExtender 4.1.1 - 4.1.9, 4.2.0 - 4.2.6, 5.3.2, 7.0.0 - 7.0.4, 7.2.0
- CVE-2022-27489 HIGH 7.2 UPGRADE A improper neutralization of special elements used in an os command ('os command injection') in Fortinet Forti
- CVE-2022-23447 HIGH 7.5 UPGRADE An improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability [CWE-22] in Fo
- CVE-2021-41016 HIGH 7.8 UPGRADE A improper neutralization of special elements used in a command ('command injection') in Fortinet FortiExtende
- CVE-2019-15710 HIGH 7.2 UPGRADE An OS command injection vulnerability in FortiExtender 4.1.0 to 4.1.1, 4.0.0 and below under CLI admin console
FAQ
How do I fix fortiextender firmware vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is fortiextender firmware being exploited right now?
None of the tracked fortiextender firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which fortiextender firmware CVE should I patch first?
CVE-2025-64153 currently ranks highest (45/100): A improper neutralization of special elements used in an os command ('os command injection') in Fortinet Forti.