Risk Scores

Timeline

• Mar 2, 2021 CVE Published
• Mar 4, 2021 PoC Published
• Apr 14, 2021 EPSS Score
• Apr 26, 2021 PoC Published
• Sep 23, 2021 PoC Published
• Nov 8, 2021 PoC Published
• Dec 21, 2021 PoC Published
• Feb 4, 2022 EPSS Score
• Feb 6, 2022 PoC Published
• Feb 9, 2022 PoC Published
• Apr 1, 2022 EPSS Score
• Jul 7, 2022 PoC Published

References

• https://cert.ssi.gouv.fr/alerte/CERTFR-2021-ALE-004/ advisory
• https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/ advisory