CVE-2025-24472: Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 18 Mar 2025, 35 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 7.2%
EPSS score, percentile 94.3 of all scored records
- How severe?
- 8.1 High
CVSS v3.1 base score, given by the CNA
- What should I do?
Required action (CISA), due 8 Apr 2025: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected: 7.0.0 through 7.0.16; 7.2.0 through 7.2.12; 7.0.0 through 7.0.19
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date for this action: 8 April 2025.
Solution (from the CVE record)
Upgrade to FortiOS version 7.0.17 or above Upgrade to FortiProxy version 7.2.13 or above Upgrade to FortiProxy version 7.0.20 or above
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 7.0.0 through 7.0.16 |
Versions not listed are: unaffected.
| Status | Versions |
|---|---|
| Affected | 7.2.0 through 7.2.12 |
| Affected | 7.0.0 through 7.0.19 |
Versions not listed are: unaffected.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
Fortinet FortiOS and FortiProxy contain an authentication bypass vulnerability that allows a remote attacker to gain super-admin privileges via crafted CSF proxy requests.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2025-24472 to its Known Exploited Vulnerabilities (KEV) catalog on 18 Mar 2025.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 8 Apr 2025.
- The CVE record was published on 11 Feb 2025, 35 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 8.1 (High), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 7.2% (percentile 94.3), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS 7.0.0 through 7.0.16 and FortiProxy 7.2.0 through 7.2.12, 7.0.0 through 7.0.19 may allow a remote unauthenticated attacker with prior knowledge of upstream and downstream devices serial numbers to gain super-admin privileges on the downstream device, if the Security Fabric is enabled, via crafted CSF proxy requests.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 11 Feb 2025 | CVE record published |
| 18 Mar 2025 | Added to CISA KEV |
| 8 Apr 2025 | CISA due date for the required action |
| 5 Aug 2026 | CVE record last updated |
References
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