CVE-2024-26009

An authentication bypass using an alternate path or channel [CWE-288] vulnerability in Fortinet FortiOS 6.4.0…

Severity: High8.1CVSS 3.1, High
Known exploited: Not listed
Exploit prediction: 0.59%
Published: 12 Aug 2025Updated 17 Jun 2026 · Last verified 29 Sept 2026

Known remediation

Fixed releases per branch, as the vendor states them. Patcharo never infers a fix.

Fortinet FortiProxy
Vendor advisory
- 7.4Fixed after 7.4.2
- 7.2Fixed after 7.2.8
- 7.0Fixed after 7.0.15
Fortinet FortiOS
Vendor advisory
- 6.4Fixed after 6.4.15
- 6.2Fixed after 6.2.16
- 6.0Fixed after 6.0.18

Workaround / Vendor remediation

Vendor remediation · FortiProxy

Upgrade to FortiSwitchManager version 7.2.4 or above Upgrade to FortiSwitchManager version 7.0.4 or above Upgrade to FortiOS version 6.4.16 or above Upgrade to FortiOS version 6.2.17 or above Upgrade to FortiManager version 7.0.12 or above Upgrade to FortiManager version 6.4.15 or above Upgrade to FortiPAM version 1.3.0 or above Upgrade to FortiProxy version 7.4.3 or above Upgrade to FortiProxy version 7.2.9 or above Upgrade to FortiProxy version 7.0.16 or above

Vendor remediation · FortiOS

Description

Title, description and vendor guidance are quoted from the source records.

An authentication bypass using an alternate path or channel [CWE-288] vulnerability in Fortinet FortiOS 6.4.0 through 6.4.15, FortiOS 6.2.0 through 6.2.16, FortiOS 6.0 all versions, FortiPAM 1.2.0, FortiPAM 1.1.0 through 1.1.2, FortiPAM 1.0.0 through 1.0.3, FortiProxy 7.4.0 through 7.4.2, FortiProxy 7.2.0 through 7.2.8, FortiProxy 7.0.0 through 7.0.15, FortiSwitchManager 7.2.0 through 7.2.3, FortiSwitchManager 7.0.0 through 7.0.3 allows an unauthenticated attacker to seize control of a managed device via crafted FGFM requests, if the device is managed by a FortiManager, and if the attacker knows that FortiManager's serial number.

Weakness: CWE-288

Known exploited

Not listed in CISA KEV as of the last check.

Exploit prediction

0.59% probability of exploitation in the next 30 days (percentile 46%).

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

What the source states, per branch

Versions matched by Patcharo

Fortinet FortiProxySource: Fortinet (CVE record)

Branch	Affected	Fixed in
7.4	7.4.0 – 7.4.2	Fixed after 7.4.2
7.2	7.2.0 – 7.2.8	Fixed after 7.2.8
7.0	7.0.0 – 7.0.15	Fixed after 7.0.15

Versions not listed are stated unaffected by the vendor.

Fortinet FortiOSSource: Fortinet (CVE record)

Branch	Affected	Fixed in
6.4	6.4.0 – 6.4.15	Fixed after 6.4.15
6.2	6.2.0 – 6.2.16	Fixed after 6.2.16
6.0	6.0.0 – 6.0.18	Fixed after 6.0.18

Versions not listed are stated unaffected by the vendor.

Affected products

Fortinet FortiPAM · 1.2.0, 1.1.0 ≤ 1.1.2, 1.0.0 ≤ 1.0.3
Fortinet FortiSwitchManager · 7.2.0 ≤ 7.2.3, 7.0.0 ≤ 7.0.3

References

https://fortiguard.fortinet.com/psirt/FG-IR-24-042(opens in a new tab)

Provenance

Every fact on this page comes from the sources below. Nothing is written by an AI.

Fortinet (CVE record): Fortinet (CVE record) · 29 Sept 2026 at 02:15 UTC · Parser patcharo-cve5/1.1.0
NVD: NVD · 27 Sept 2026 at 23:44 UTC · Parser patcharo-nvd/1.0.0
FIRST EPSS: FIRST EPSS · 30 Sept 2026 at 00:17 UTC · Parser patcharo-epss/1.0.0

Last verified: 29 Sept 2026 at 02:15 UTC