CVE-2021-26108
No exploitation reported by the sources we read.
- Published2021-12-08
- WeaknessCWE-798
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2021-12-0813:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-26108?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-26108?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.6 | ≥ 5.6.0, ≤ 5.6.13 | no fix published | NVD |
| 6.0 | ≥ 6.0.0, ≤ 6.0.12 | no fix published | NVD |
| 6.2 | ≥ 6.2.0, ≤ 6.2.8 | no fix published | NVD |
| 6.4 | ≥ 6.4.0, ≤ 6.4.5 | no fix published | NVD |
| 7.0 | = 7.0.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- fortiguard.comPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- 2021-12-08
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-26108?
Is CVE-2021-26108 actively exploited?
What is the CVSS score for CVE-2021-26108?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.