CVE
A authorization bypass through user-controlled key vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through…
Affects FortiManager 7.4.0 through 7.4.11, 7.6.0 through 7.6.7, and 8.0.0 through 8.0.1. The advisory's stated fix is an upgrade to FortiManager 8.0.2 or above.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 8.0.2
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Affected FortiManager 8.0.0 through 8.0.1 Affected FortiManager 7.6.0 through 7.6.7 Affected FortiManager 7.4.0 through 7.4.11
- Last modified
- Whether it needs action now or is a reference record, by fixed rules, with why. Last checked is when cve.now last re-read it.What do these mean? →
- Reference
- Last checked
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 30/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A authorization bypass through user-controlled key vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11 may allow a remote authenticated attacker with admin permission to elevate their privileges to root via crafted HTTP requests.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure8/25Specific setups only, reachable over the network
- Reach14/20Affects Fortinet (an enterprise product or network appliance)
- Severity8.2/10CVSS 8.2
- No patch0/5No signal
What would change the score
- Would score about 80 if added to CISA KEV
- Would score about 75 if CISA's SSVC rates exploitation active
- Would score about 37 if CISA's SSVC rates it automatable
What to do
Check whether your setup matches what the bug needs.
Affected FortiManager 8.0.0 through 8.0.1 Affected FortiManager 7.6.0 through 7.6.7 Affected FortiManager 7.4.0 through 7.4.11Upgrade to a fixed version: 8.0.2.
Check your systems with an agent
Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.
Check whether my systems are affected by CVE-2026-126218 (A authorization bypass through user-controlled key vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through…), using the cve.now data below.
Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.
What cve.now has for CVE-2026-126218 (entry last updated 2026-11-11):
Affected:
- Fortinet FortiManager: from 8.0.0, through 8.0.1; from 7.6.0, through 7.6.7; from 7.4.0, through 7.4.11
Fixed versions: 8.0.2.
Conditions (all must be true for the bug to be hit):
- Affected FortiManager 8.0.0 through 8.0.1 (source: https://fortiguard.fortinet.com/psirt/FG-IR-26-235)
- Affected FortiManager 7.6.0 through 7.6.7 (source: https://fortiguard.fortinet.com/psirt/FG-IR-26-235)
- Affected FortiManager 7.4.0 through 7.4.11 (source: https://fortiguard.fortinet.com/psirt/FG-IR-26-235)
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
Attacker needs: network access, high-privilege login, no user action.
CISA KEV: CVE-2026-126218 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-126218 only. If you also check another CVE, look up its own KEV status; never assume it from this one.
How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.
Verify against the linked advisories before concluding, and cite the date you read each one:
- https://fortiguard.fortinet.com/psirt/FG-IR-26-235
- https://www.cve.org/CVERecord?id=CVE-2026-126218
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.
Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.
Entry: https://cve.now/CVE-2026-126218
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-126218"}.Timeline
- CVE published
- First seen by cve.now
Affected versions
- Fortinet FortiManager
From 8.0.0 · through 8.0.1; From 7.6.0 · through 7.6.7; From 7.4.0 · through 7.4.11
Evidence 3
Vendor advisory · 1
Establishes: Affected and fixed versions.
- Link
CVE record · 2
Establishes: The identifier and description.
- Record
- Record
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-126218
Is CVE-2026-126218 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
An authenticated user with admin permission can send crafted HTTP requests to raise their privileges to root. The CVSS score is 8.2 (high).Source: fortiguard.fortinet.com, cve.org
Which versions are affected by CVE-2026-126218?
FortiManager: from 8.0.0 through 8.0.1; from 7.6.0 through 7.6.7; from 7.4.0 through 7.4.11.Source: cve.now feed data
Am I affected, and how do I check?
The affected ranges are FortiManager 7.4.0 through 7.4.11, 7.6.0 through 7.6.7, and 8.0.0 through 8.0.1. A reader can compare the installed FortiManager version against these ranges.Source: fortiguard.fortinet.com, cve.org
How do I fix CVE-2026-126218?
The advisory says to upgrade to FortiManager 8.0.2 or above. The checked facts do not list fixed builds for the 7.4 or 7.6 branches.Source: fortiguard.fortinet.com, cve.org