Risk | Critical |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-26109 |
CWE-ID | CWE-190 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
FortiOS Operating systems & Components / Operating system |
Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
EUVDB-ID: #VU58627
Risk: Critical
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26109
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in the SSL VPN interface. A remote non-authenticated attacker can send a specially crafted HTTP request to the SSL VPN interface, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortiOS: 6.0.0 - 7.0.0
External linkshttp://www.fortiguard.com/psirt/FG-IR-21-049
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.