CVE-2021-22128 json
An improper access control vulnerability in FortiProxy SSL VPN portal 2.0.0, 1.2.9 and below versions may allow an authenticated, remote at…
published 2021-03-04 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9284
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
An improper access control vulnerability in FortiProxy SSL VPN portal 2.0.0, 1.2.9 and below versions may allow an authenticated, remote attacker to access internal service such as the ZebOS Shell on the FortiProxy appliance through the Quick Connection functionality.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- Fortinet Fortinet FortiProxy
Classification
- Technology feeds
References
-
fortiguard.com
/advisory/FG-IR-20-235
vendor-advisory
Sources
- CVE List CVE-2021-22128
- NVD CVE-2021-22128
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.