CVE-2026-121528
A NVD · · CVE-2026-121528
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- CVSS
- 8.1
- EPSS
- 0%
Key insight
The report merely supplements the CVE description; it contains no indication of active exploitation, KEV listing, or a public PoC.
Description
The vulnerability affects Fortinet FortiOS versions 7.6.0 through 7.6.4, 7.4.0 through 7.4.9, and 7.2.0 through 7.2.13. Due to improper certificate validation, a remote, unauthenticated attacker can perform a man-in-the-middle attack on the communication between the SSLVPN web portal and the backend destination website. Exploitation requires the attacker to be able to influence the relevant traffic. The report contains no information about active exploitation, KEV listing, or a public proof of concept.
Risk score
- cvss base
- 81.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 81.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational