Fortinet FortiClient up to 6.4.2/7.0.1 on Windows Named Pipe improper authorization
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.9 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical was found in Fortinet FortiClient up to 6.4.2/7.0.1 on Windows. Affected is an unknown function of the component Named Pipe Handler. The manipulation results in improper authorization. This vulnerability is identified as CVE-2021-36183. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.
Details
A vulnerability classified as critical has been found in Fortinet FortiClient up to 6.4.2/7.0.1 on Windows. Affected is an unknown function of the component Named Pipe Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was released 11/03/2021 as FG-IR-20-079. The advisory is shared for download at fortiguard.com. This vulnerability is traded as CVE-2021-36183 since 07/06/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.
Upgrading eliminates this vulnerability.
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Product
Vendor
Name
Version
License
Website
- Vendor: https://www.fortinet.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.0VulDB Meta Temp Score: 7.9
VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CNA Base Score: 7.4
CNA Vector (Fortinet, Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Improper authorizationCWE: CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
07/06/2021 🔍11/03/2021 🔍
11/03/2021 🔍
05/05/2026 🔍
Sources
Vendor: fortinet.comAdvisory: FG-IR-20-079
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-36183 (🔍)
GCVE (CVE): GCVE-0-2021-36183
GCVE (VulDB): GCVE-100-185976
Entry
Created: 11/03/2021 10:03Updated: 05/05/2026 12:30
Changes: 11/03/2021 10:03 (49), 11/06/2021 19:24 (2), 11/06/2021 19:32 (18), 05/05/2026 12:27 (1), 05/05/2026 12:30 (18)
Complete: 🔍
Committer: lywand
Cache ID: 216::103
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