CVE-2020-3452 Details
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2020-3452
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%).
94.45 Probability of exploitation activity being observed over the next 30 days (100th percentile)
CVSS score for CVE-2020-3452
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.
7.5 High

CVE-2020-3452 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,281 23.11%
RU 828 14.94%
JP 288 5.20%
IT 180 3.25%
GB 163 2.94%
CA 156 2.81%
DE 147 2.65%
CN 141 2.54%
KR 122 2.20%
UA 99 1.79%

Is CVE-2020-3452 part of your extended attack surface? Bitsight helps security leaders rapidly identify exposure and detect threats in order to prioritize, communicate, and mitigate risk.

View interactive product tours

CVE-2020-3452 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 1,759 65.81%
Technology 460 17.21%
Government/Politics 83 3.11%
Business Services 71 2.66%
Manufacturing 45 1.68%
Finance 42 1.57%
Education 36 1.35%
Utilities 30 1.12%
Healthcare/Wellness 24 0.90%
Media/Entertainment 20 0.75%

Bitsight, the leading provider in Cyber Risk Management, introduced the next-generation internet scanner Bitsight Groma in May 2024. This technology continuously scans the entire internet to discover assets, collect asset attribution evidence, and identify an ever-growing set of security observations, such as vulnerabilities and misconfigurations. Groma’s scanning activities presently encompass:


  • 40 million-plus monitored organizations
  • 250 million-plus host names
  • 4 billion-plus routable IPv4 and IPv6 addresses

Greynoise’s recent study testifies the speed of Bitsight Groma.

Bitsight data discovery
Governance charcoal background

Bitsight TRACE team investigates security incidents and identifies vulnerabilities and threats.

View latest security research 

See what you’re up against across the expanding attack surface. Prioritize what matters most. And mitigate where you’re most vulnerable.

External Attack Surface Management

Bitsight ASA Report Image

Reducing exposure starts with knowing exactly how your external attack surface stands—from your overall standing to each digital and cloud asset around the world. Bitsight's custom report gives you the insights you need to see your entire external attack surface.