Fortiportal
CVE-2021-36174
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could exhaust system resources through uncontrolled allocation by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
A memory allocation with excessive size value vulnerability in the license verification function of FortiPortal before 6.0.6 may allow an attacker to perform a denial of service attack via specially. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. A memory allocation with excessive size value vulnerability in the license verification function of FortiPortal before 6.0.6 may allow an attacker to perform a denial of service attack via specially crafted license blobs. Affected products include: Fortinet Fortiportal. Version information: before 6.0.6.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
A memory allocation with excessive size value vulnerability in the license verification function of FortiPortal before 6.0.6 may allow an attacker to perform a denial of service attack via specially crafted license blobs.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
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An improper Access Control vulnerability in Fortinet FortiPortal versions 4.0.0 and below allows an attacker to interact
An improper neutralization of special elements used in a command ('Command Injection') vulnerability [CWE-77] in FortiPo
Multiple improper neutralization of special elements used in an SQL command vulnerabilities in FortiPortal 6.0.0 through
An Improper Resolution of Path Equivalence vulnerability [CWE-41] in FortiPortal 7.4.0 through 7.4.2, 7.2.0 through 7.2.
An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal bef
An unrestricted file upload vulnerability in the web interface of FortiPortal 6.0.0 through 6.0.4, 5.3.0 through 5.3.5,
A password management vulnerability in Fortinet FortiPortal versions 4.0.0 and below allows an attacker to carry out inf
A weak password recovery vulnerability in Fortinet FortiPortal versions 4.0.0 and below allows attacker to carry out inf
A Use Of Less Trusted Source [CWE-348] vulnerability in Fortinet FortiPortal version 7.0.0 through 7.0.6 and version 7.2
A use of one-way hash with a predictable salt vulnerability in the password storing mechanism of FortiPortal 6.0.0 throu
GitHub PoC
Exploit-DB