CVE-2021-26108
HIGHCVSS 7.5/10EPSS 1.04%
Last modified
CVE-2021-26108 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A use of hard-coded cryptographic key vulnerability in the SSLVPN of FortiOS before 7.0.1 may allow an attacker to retrieve the key by reverse engineering.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.
Description
A use of hard-coded cryptographic key vulnerability in the SSLVPN of FortiOS before 7.0.1 may allow an attacker to retrieve the key by reverse engineering.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortios | >= 5.6.0, <= 5.6.13 |
| Fortinet | Fortios | >= 6.0.0, <= 6.0.12 |
| Fortinet | Fortios | >= 6.2.0, <= 6.2.8 |
| Fortinet | Fortios | >= 6.4.0, <= 6.4.5 |
| Fortinet | Fortios | 7.0.0 |
References
- https://fortiguard.com/advisory/FG-IR-21-051Patch, Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-21-051Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26108?
A use of hard-coded cryptographic key vulnerability in the SSLVPN of FortiOS before 7.0.1 may allow an attacker to retrieve the key by reverse engineering.
How severe is CVE-2021-26108?
CVE-2021-26108 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26108?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-26108?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST