The use of a cryptographically weak pseudo-random number generator in the password reset…
Priority MEDIUM 40CWE-338Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The use of a cryptographically weak pseudo-random number generator in the password reset feature of FortiPortal before 6.0.6 may allow a remote unauthenticated attacker to predict parts of or the whole newly generated password within a given time frame.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01154 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | Fortinet FortiPortal | FortiPortal before 6.0.6 | — | No fix listed | CNA |
- Fortinet FortiPortal VendorFortinet Affected FortiPortal before 6.0.6 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortiportal:*:*:*:*:*:*:*:* | up to 4.0.4; 4.1.0 – 4.1.2; 4.2.0 – 4.2.4; 5.0.0 – 5.0.3; 5.1.0 – 5.1.2; 5.2.0 to before 5.2.7; 5.3.0 to before 5.3.7; 6.0.0 to before 6.0.6 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:fortiportal:*:*:*:*:*:*:*:* Versions up to 4.0.4; 4.1.0 – 4.1.2; 4.2.0 – 4.2.4; 5.0.0 – 5.0.3; 5.1.0 – 5.1.2; 5.2.0 to before 5.2.7; 5.3.0 to before 5.3.7; 6.0.0 to before 6.0.6 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-36171
- 2026-10-03 Alias added: GHSA-p7rc-qmr8-gxr8
References
More Fortinet Fortiportal vulnerabilities
- TI-2021-12259 Hard-coded credentials in Fortinet FortiPortal CVSS 3.1CRITICAL 9.8
- TI-2021-12260 Use after free in Fortinet FortiManager CVSS 3.1CRITICAL 9.8
- TI-2024-14445 Authorization bypass in Fortinet FortiPortal CVSS 3.1MEDIUM 4.3
- TI-2017-05005 Improper input validation in Fortinet FortiPortal CVSS 3.0CRITICAL 9.8
- TI-2024-17109 Missing authentication in Fortinet FortiManager CVSS 3.1CRITICAL 9.8
- TI-2017-05000 Incorrect permission assignment in Fortinet FortiPortal CVSS 3.0CRITICAL 9.1
Sources
- CVE-2021-36171 · CVE Program
- CVE-2021-36171 · NVD
- FIRST EPSS
- GHSA-p7rc-qmr8-gxr8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences