Medium severity · published Dec 8, 2021
CVE-2021-36191
A url redirection to untrusted site ('open redirect') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to use the device as proxy via crafted GET…
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
A url redirection to untrusted site ('open redirect') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to use the device as proxy via crafted GET parameters in requests to error handlers
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortiweb · Fortinet
6.0.0 through 6.0.7; 6.2.0 through 6.2.6; 6.3.0 through 6.3.15; 6.1.0; 6.1.1; 6.1.2; +2 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36191
Patch
https://fortiguard.com/advisory/FG-IR-21-133
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