A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS ve…
- Severity
- Critical9.8CVSS 3.1, Critical
- Known exploited
- Not listed
- Exploit prediction
- 18%
- Published
- 24 Mar 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 FortiAnalyzer
Vendor advisory- 7.2No fix published
- 7.0Fixed after 7.0.4
- 6.4Fixed after 6.4.11
- 6.2Fixed after 6.2.10
- 6.0Fixed after 6.0.11
Fortinet FortiProxy
Vendor advisory- 7.2Fixed after 7.2.2
- 7.0Fixed after 7.0.8
- 2.0Fixed after 2.0.14
- 1.2Fixed after 1.2.13
- 1.1Fixed after 1.1.6
Fortinet FortiOS
Vendor advisory- 7.2Fixed after 7.2.3
- 7.0Fixed after 7.0.9
- 6.4Fixed after 6.4.11
- 6.2Fixed after 6.2.12
- 6.0Fixed after 6.0.18
- 5.6Fixed after 5.6.14
- 5.4Fixed after 5.4.13
- 5.2Fixed after 5.2.15
- 5.0Fixed after 5.0.14
Fortinet FortiManager
Vendor advisory- 7.2No fix published
- 7.0Fixed after 7.0.4
- 6.4Fixed after 6.4.11
- 6.2Fixed after 6.2.10
- 6.0Fixed after 6.0.11
Fortinet FortiWeb
Vendor advisory- 7.2Fixed after 7.2.1
- 7.0Fixed after 7.0.6
- 6.4Fixed after 6.4.2
- 6.3Fixed after 6.3.22
- 6.2Fixed after 6.2.7
- 6.1Fixed after 6.1.3
Workaround / Vendor remediation
Vendor remediation · FortiAnalyzer
Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…
Vendor remediation · FortiProxy
Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…
Vendor remediation · FortiOS
Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…
Vendor remediation · FortiManager
Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…
Vendor remediation · FortiWeb
Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.10 or above Please upgrade to FortiOS version 6.4.12 or above Please upgrade to FortiOS version 6.2.13 or above Please upgrade to FortiWeb version 7.2.2 or above Please upgrade to FortiWeb version 7.0.7 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.23 or above Please upgrade to FortiWeb version 6.2.8 or above Please upgrade to FortiWeb version 6.1.4 or above Please upgrade to upcoming FortiOS version 6.0.17 or above Please upgrade to FortiSwitchManager version 7.2.2 or above Please upgrade to FortiSwitchManager version 7.0.2 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.9 or above Please upgrade to FortiManager version 7.2.1 or above Please upgrad…
Description
Title, description and vendor guidance are quoted from the source records.
A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS version 7.2.0 through 7.2.3, version 7.0.0 through 7.0.6, version 6.4.0 through 6.4.11 and version 6.2.12 and below, FortiProxy version 7.2.0 through 7.2.2, version 7.0.0 through 7.0.8, version 2.0.12 and below and FortiOS-6K7K version 7.0.5, version 6.4.0 through 6.4.10 and version 6.2.0 through 6.2.10 and below allows a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
Weakness: CWE-124
Known exploited
Not listed in CISA KEV as of the last check.
Exploit prediction
18% probability of exploitation in the next 30 days (percentile 97%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Fortinet FortiAnalyzerSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.2 | Exact releases: 7.2.0 | |
| 7.0 | 7.0.0 – 7.0.4 | Fixed after 7.0.4 |
| 6.4 | 6.4.0 – 6.4.11 | Fixed after 6.4.11 |
| 6.2 | 6.2.0 – 6.2.10 | Fixed after 6.2.10 |
| 6.0 | 6.0.0 – 6.0.11 | Fixed after 6.0.11 |
Versions not listed are stated unaffected by the vendor.
Fortinet FortiProxySource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.2 | 7.2.0 – 7.2.2 | Fixed after 7.2.2 |
| 7.0 | 7.0.0 – 7.0.8 | Fixed after 7.0.8 |
| 2.0 | 2.0.0 – 2.0.14 | Fixed after 2.0.14 |
| 1.2 | 1.2.0 – 1.2.13 | Fixed after 1.2.13 |
| 1.1 | 1.1.0 – 1.1.6 | Fixed after 1.1.6 |
Versions not listed are stated unaffected by the vendor.
Fortinet FortiOSSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.2 | 7.2.0 – 7.2.3 | Fixed after 7.2.3 |
| 7.0 | 7.0.0 – 7.0.9 | Fixed after 7.0.9 |
| 6.4 | 6.4.0 – 6.4.11 | Fixed after 6.4.11 |
| 6.2 | 6.2.0 – 6.2.12 | Fixed after 6.2.12 |
| 6.0 | 6.0.0 – 6.0.18 | Fixed after 6.0.18 |
| 5.6 | 5.6.0 – 5.6.14 | Fixed after 5.6.14 |
| 5.4 | 5.4.0 – 5.4.13 | Fixed after 5.4.13 |
| 5.2 | 5.2.0 – 5.2.15 | Fixed after 5.2.15 |
| 5.0 | 5.0.0 – 5.0.14 | Fixed after 5.0.14 |
Versions not listed are stated unaffected by the vendor.
Fortinet FortiManagerSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.2 | Exact releases: 7.2.0 | |
| 7.0 | 7.0.0 – 7.0.4 | Fixed after 7.0.4 |
| 6.4 | 6.4.0 – 6.4.11 | Fixed after 6.4.11 |
| 6.2 | 6.2.0 – 6.2.10 | Fixed after 6.2.10 |
| 6.0 | 6.0.0 – 6.0.11 | Fixed after 6.0.11 |
Versions not listed are stated unaffected by the vendor.
Fortinet FortiWebSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.2 | 7.2.0 – 7.2.1 | Fixed after 7.2.1 |
| 7.0 | 7.0.0 – 7.0.6 | Fixed after 7.0.6 |
| 6.4 | 6.4.0 – 6.4.2 | Fixed after 6.4.2 |
| 6.3 | 6.3.0 – 6.3.22 | Fixed after 6.3.22 |
| 6.2 | 6.2.0 – 6.2.7 | Fixed after 6.2.7 |
| 6.1 | 6.1.0 – 6.1.3 | Fixed after 6.1.3 |
Versions not listed are stated unaffected by the vendor.
Affected products
- Fortinet FortiSwitchManager · 7.2.0 ≤ 7.2.1, 7.0.0 ≤ 7.0.1
- Fortinet FortiOS-6K7K · 7.0.5, 6.4.10, 6.4.8, 6.4.6, 6.4.2, 6.2.9 ≤ 6.2.12, 6.2.6 ≤ 6.2.7, 6.2.4, 6.0.12 ≤ 6.0.18, 6.0.10
References
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 09:17 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 09:17 UTC