CVE-2026-126259
A NVD · · CVE-2026-126259
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
- 9.8
- EPSS
- 0%
Key insight
The advisory provides the specific attack conditions (HA FGSP/standalone-config-sync or autoscale) for unauthenticated super-admin command execution, going beyond a pure patch reminder.
Description
CVE-2026-126259 affects Fortinet FortiOS versions 8.0.0, 7.6.0 through 7.6.7, 7.4.0 through 7.4.12, and 7.2.0 through 7.2.13. A missing authentication for a critical function allows an unauthenticated attacker in HA configurations with FGSP and standalone-config-sync or in autoscale environments to execute commands as super admin via crafted HA packets. The vulnerability requires these specific deployment variants; in that case, an attack is possible without prior login. The advisory does not state active exploitation, KEV inclusion, or a public PoC.
Risk score
- cvss base
- 98.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 98.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational