CVE-2021-2001 Details
A vulnerability was found in Oracle MySQL Server up to 5.6.50/5.7.30/8.0.17 (Database Software) and classified as critical. Affected by this issue is an unknown code of the component Optimizer. Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2021-2001
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%).
2.2 Probability of exploitation activity being observed over the next 30 days (81th percentile)
CVSS score for CVE-2021-2001
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.
4.9 Medium
Products affected by CVE-2021-2001

CVE-2021-2001 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
CN 59,946 38.23%
US 48,090 30.66%
HK 4,633 2.95%
KR 4,335 2.76%
RU 3,568 2.28%
DE 3,525 2.25%
IN 3,369 2.15%
SG 2,889 1.84%
BR 2,536 1.62%
JP 2,015 1.28%

Is CVE-2021-2001 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-2021-2001 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
Technology 73,201 85.97%
Telecommunications 10,629 12.48%
Retail 375 0.44%
Education 212 0.25%
Business Services 143 0.17%
Government/Politics 85 0.10%
Media/Entertainment 71 0.08%
Manufacturing 63 0.07%
Consumer Goods 48 0.06%
Finance 47 0.06%

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