CVE-2021-36187

HIGH

7.5

CVSS Score

Published: November 2, 2021 at 06:32 PM UTC

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

1 product affected across 1 vendorFortiWeb

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

A uncontrolled resource consumption in Fortinet FortiWeb version 6.4.0, version 6.3.15 and below, 6.2.5 and below allows attacker to cause a denial of service for webserver daemon via crafted HTTP requests

Affected

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

FortiWeb · Fortinet

95%

6.2.0 ≤ v ≤ 6.2.56.3.0 ≤ v ≤ 6.3.153.0.0 4.0.2 4.1.0 4.1.1 4.1.2 4.2.0 4.2.2 4.2.3 4.2.4 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 4.3.7 4.4.0 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 5.0.0 5.0.1 5.0.2 5.0.3 5.0.4 5.0.5 5.0.6 5.1.0 5.1.1 5.1.2 5.1.3 5.1.4 5.2.0 5.2.1 5.2.2 5.2.3 5.2.4 5.3.0 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 5.3.7 5.3.8 5.3.9 5.4.0 5.4.1 5.5.0 5.5.1 5.5.2 5.5.3 5.5.4 5.5.5 5.5.6 5.5.7 5.6.0 5.6.1 5.6.2 5.7.0 5.7.1 5.7.2 5.7.3 5.8.0 5.8.1 5.8.2 5.8.3 5.8.5 5.8.6 5.8.7 5.9.0 5.9.1 6.0.0 6.0.1 6.0.2 6.0.3 6.0.4 6.0.5 6.0.6 6.0.7 6.1.0 6.1.1 6.1.2 6.2.0 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.3.0 6.3.1 6.3.10 6.3.11 6.3.12 6.3.13 6.3.14 6.3.15 6.3.2 6.3.3 6.3.4 6.3.5 6.3.6 6.3.7 6.3.8 6.3.9 6.4.0

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/advisory/FG-IR-21-039

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://fortiguard.com/advisory/FG-IR-21-039

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGH[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-400

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