CVE-2021-22123
Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-1c01732f7892, updated 2026-06-17T03:36:39.370Z.
NVD analysis
- Status
- Modified
- Published
- 2021-06-01T20:15:08.297
- Last modified
- 2026-06-17T03:36:39.370
- Weaknesses
- CWE-78
An OS command injection vulnerability in FortiWeb's management interface 6.3.7 and below, 6.2.3 and below, 6.1.x, 6.0.x, 5.9.x may allow a remote authenticated attacker to execute arbitrary commands on the system via the SAML server configuration page.
| Metric | Score | Severity | Vector | Scored by |
|---|---|---|---|---|
| CVSS 3.1 | 7.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H | [email protected] (Secondary) |
| CVSS 3.1 | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | [email protected] (Primary) |
| CVSS 2.0 | 9 | HIGH | AV:N/AC:L/Au:S/C:C/I:C/A:C | [email protected] (Primary) |
References
- https://fortiguard.com/advisory/FG-IR-20-120 (Vendor Advisory)
- https://fortiguard.com/advisory/FG-IR-20-120 (Vendor Advisory)
This product uses the NVD API but is not endorsed or certified by the NVD.
Read on 2026-11-03T01:42:49.366Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-22123
CVE record
- Assigner
- fortinet
- State
- PUBLISHED
- Published
- 2021-06-01T19:58:35.000Z
- Updated
- 2024-10-25T13:58:34.151Z
- Problem types
- Execute unauthorized code or commands
An OS command injection vulnerability in FortiWeb's management interface 6.3.7 and below, 6.2.3 and below, 6.1.x, 6.0.x, 5.9.x may allow a remote authenticated attacker to execute arbitrary commands on the system via the SAML server configuration page.
References
Read on 2026-11-03T01:06:14.017Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2021/22xxx/CVE-2021-22123.json
Detection rules (SigmaHQ)
SigmaHQ rules whose own tags name this CVE. Each rule page shows the rule as its author published it.
- Fortinet CVE-2021-22123 Exploitation (status test, level critical)
Defensive techniques (MITRE D3FEND)
D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- Model: Asset Vulnerability Enumeration (acts on Software)
- Harden: Software Update (acts on Software)
- Restore: Restore Software (acts on Software)
- Harden: Domain Logic Validation (acts on Subroutine)
- Harden: Variable Initialization (acts on Subroutine)
- Harden: Credential Scrubbing (acts on Subroutine)
- Harden: Trusted Library (acts on Subroutine)
- Isolate: Application-based Process Isolation (acts on Subroutine)
- Model: Software Inventory (acts on Software)
D3FEND ontology version 1.6.0.
Read on 2026-11-02T23:54:16.526Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-78.json
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/
Sources and licences
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
SigmaHQ
"Fortinet CVE-2021-22123 Exploitation" by Bhabesh Raj, Florian Roth (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Exploits/CVE-2021-22123/web_cve_2021_22123_fortinet_exploit.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-LicenseMITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT
Cite this page
Dragons Eye Ransomware Tracker, "CVE-2021-22123",
entity page, dataset version ref-1c01732f7892, updated 2026-06-17T03:36:39.370Z,
https://ransomware-tracker.com/cve/CVE-2021-22123 (accessed 2026-11-03).
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T03:36:39.370.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2024-10-25T13:58:34.151Z.
Underlying source: SigmaHQ rule f425637f-891c-4191-a6c4-3bb1b70513b4, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: MITRE D3FEND, ontology version 1.6.0.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.