High severity · published Dec 8, 2021
CVE-2021-26103
An insufficient verification of data authenticity vulnerability (CWE-345) in the user interface of FortiProxy verison 2.0.3 and below, 1.2.11 and below and FortiGate verison…
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
An insufficient verification of data authenticity vulnerability (CWE-345) in the user interface of FortiProxy verison 2.0.3 and below, 1.2.11 and below and FortiGate verison 7.0.0, 6.4.6 and below, 6.2.9 and below of SSL VPN portal may allow a remote, unauthenticated attacker to conduct a cross-site request forgery (CSRF) attack . Only SSL VPN in web mode or full mode are impacted by this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiOS · Fortinet
5.6.0 through 5.6.14; 6.0.0 through 6.0.13; 6.2.0 through 6.2.9; 6.4.0 through 6.4.6; 7.0.0 · source: NVD
FO
Fortiproxy · Fortinet
1.2.0 through 1.2.11; 2.0.0 through 2.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26103
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26103
Patch
https://fortiguard.com/advisory/FG-IR-20-158
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