CVE-2021-24020
7.5 · HIGHOverview
CVE-2021-24020 is a high-severity vulnerability affecting fortinet fortimail. It was published on July 9, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.
Remediation
Check the references section for vendor advisories and patches from fortinet. Update fortimail to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| fortinet | fortimail | 6.2.0 | Affected |
Frequently Asked Questions
What is CVE-2021-24020?
CVE-2021-24020 is a high-severity vulnerability affecting fortinet fortimail. It was published on July 9, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-24020?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-24020?
Check the references section for vendor advisories and patches from fortinet. Update fortimail to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-24020?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-24020 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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