What is CVE-2026-126261?
A improper authorization vulnerability in Fortinet FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.5, FortiManager 7.2.0 through 7.2.8 may allow an unauthenticated attacker that can reach the FGFM port to execute code or commands via crafted FGFM packets.
The record classifies CVE-2026-126261 under weakness class CWE-285. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 1 day ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-11-10
Is CVE-2026-126261 being exploited?
It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.
Affected products and versions
- Fortinet: FortiManager
How to fix CVE-2026-126261
No vendor patch reference has been recorded for CVE-2026-126261 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-126261
1 tracked threat in the Threadlinqs corpus references CVE-2026-126261, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, GitHub Security Advisories.