// For flags

CVE-2020-12820

 

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-05-12 CVE Reserved
  • 2024-12-19 CVE Published
  • 2024-12-20 CVE Updated
  • 2024-12-20 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Fortinet
Search vendor "Fortinet"
 FortiOS
Search vendor "Fortinet" for product "FortiOS"
 >= 6.0.0 <= 6.0.10
Search vendor "Fortinet" for product "FortiOS" and version " >= 6.0.0 <= 6.0.10"
en
Affected
Fortinet
Search vendor "Fortinet"
 FortiOS
Search vendor "Fortinet" for product "FortiOS"
 >= 5.6.0 <= 5.6.12
Search vendor "Fortinet" for product "FortiOS" and version " >= 5.6.0 <= 5.6.12"
en
Affected