CVE-2020-12820 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2020-12820
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.65 Probability of exploitation activity being observed over the next 30 days (70th percentile)
CVSS score for CVE-2020-12820
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
5.4 Medium
Products affected by CVE-2020-12820
FortiOS 5.4.0
FortiOS 5.4.1
FortiOS 5.4.10
FortiOS 5.4.12
FortiOS 5.4.13
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2020-12820 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,593 10.52%
IN 1,497 9.88%
TW 1,124 7.42%
KR 704 4.65%
AE 566 3.74%
CN 547 3.61%
TH 544 3.59%
JP 533 3.52%
MX 505 3.33%
MY 494 3.26%

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CVE-2020-12820 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 7,292 87.20%
Technology 536 6.41%
Consumer Goods 154 1.84%
Business Services 98 1.17%
Utilities 60 0.72%
Government/Politics 59 0.71%
Media/Entertainment 27 0.32%
Education 25 0.30%
Energy/Resources 17 0.20%
Aerospace/Defense 16 0.19%

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