CVE-2021-36171

HIGH

8.1

CVSS Score

Published: March 1, 2022 at 06:05 PM UTC

Updated: June 17, 2026 at 03:58 AM UTC

1 product affected across 1 vendorFortiPortal

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Severity

HIGH8.1

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FortiPortal · Fortinet

95%

v ≤ 4.0.4v < 6.0.64.1.0 ≤ v ≤ 4.1.24.2.0 ≤ v ≤ 4.2.45.0.0 ≤ v ≤ 5.0.35.1.0 ≤ v ≤ 5.1.25.2.0 ≤ v < 5.2.75.3.0 ≤ v < 5.3.76.0.0 ≤ v < 6.0.6

Affected range stops below 5.2.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://fortiguard.com/psirt/FG-IR-21-099

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://fortiguard.com/psirt/FG-IR-21-099

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHfortinet

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-338

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