XSS in Fortinet Fortios, Fortiproxy
CVE-2021-26092
Failure to sanitize input in the SSL VPN web portal of FortiOS 5.2.10 through 5.2.15, 5.4.0 through 5.4.13, 5.6.0 through 5.6.14, 6.0.0 through 6.0.12, 6.2.0 through 6.2.7, 6.4.0 through 6.4.4; and FortiProxy 1.2.0 through 1.2.9, 2.0.0 through 2.0.1 may allow a remote unauthenticated attacker to perform a reflected Cross-site Scripting (XSS) attack by sending a request to the error page with malicious GET parameters.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.011 (63.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Fortinet Fortios, Fortiproxy — versions FortiOS 5.2.10 through 5.2.15, 5.4.0 through 5.4.13, 5.6.0 through 5.6.14, 6.0.0 through 6.0.12, 6.2.0 through 6.2.7, 6.4.0 through 6.4.4; FortiProxy 1.2.0 through 1.2.9, 2.0.0 through 2.0.1
- Fortinet Fortios
- Fortinet Fortiproxy — versions 2.0.0, 2.0.1
Weakness classification (CWE)
References
- fortiguard.com/psirt/FG-IR-20-199 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26092?
- CVE-2021-26092 is a medium-severity vulnerability in Fortinet Fortios, Fortiproxy, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2022-02-24.
- How severe is CVE-2021-26092?
- Medium severity. CVSS v3 base score is 4.7 out of 10.