Fortiportal
CVE-2021-36172
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A02:2025 - Security Misconfiguration
ASVS 5.0
V13 - Configuration XML external entity prevention
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could read arbitrary files or perform SSRF through XML processing by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Disable external entity processing in XML parsers, use JSON instead of XML where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
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 XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents. Affected products include: Fortinet Fortiportal. Version information: before 6.0.6.
Know when Fortiportal gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.
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
XML External Entity (XXE) attacks exploit XML parsers that process Document Type Definitions (DTDs) without proper restrictions.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
More in Fortiportal
View allA missing authentication for critical function in Fortinet FortiManager version 7.4.0 through 7.4.2, 7.2.0 through 7.2.4
A use of hard-coded credentials (CWE-798) vulnerability in FortiPortal versions 5.2.5 and below, 5.3.5 and below, 6.0.4
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 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 memory allocation with excessive size value vulnerability in the license verification function of FortiPortal before 6
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