Home/CVE/An improper validation of certificate with host mismatch [CWE-297] vulnerability in FortiOS versions 6.4.6 and below may
CVE

CVE-2021-41019

An improper validation of certificate with host mismatch [CWE-297] vulnerability in FortiOS versions 6.4.6 and below may

An improper validation of certificate with host mismatch [CWE-297] vulnerability in FortiOS versions 6.4.6 and below may allow the connection to a malicious LDAP server via options in GUI, leading to disclosure of sensitive information, such as AD credentials.

LOW · CVSS 3.5 EPSS 0.0024
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

1
fortinet fortios>= 6.4.0 and <= 6.4.6
▣

Scoring & Timeline

3.5
LOW · CVSS v3.1 · psirt@fortinet.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Nov 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://fortiguard.com/advisory/FG-IR-21-074Vendor Advisory
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