vss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3aN%2fI%3aN%2fA%3aH&version=3.1">7.5</a></td><td>Multiple denial of service vulnerabilities in Envoy</td></tr><tr><td style=white-space:nowrap><a href=/v1.25/news/security/istio-security-2020-006/>ISTIO-SECURITY-2020-006</a></td><td>June 11, 2020</td><td>1.4 to 1.4.9<br>1.5 to 1.5.4<br>1.6 to 1.6.1<br></td><td class=score><a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aU%2fC%3a