CVE-2021-28480

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

71.43% chance of exploitation in the next 30 days, 99th percentile

Nuclei

critical

Published

2021-04-13

Updated

2024-08-03

Proof-of-concept exploits (2)

• Threonic/CVE-2021-284800★ · 2022-03-30
• ZephrFish/CVE-2021-28480_HoneyPoC310★ · 2026-07-31

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-28480.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2020-1350
• CVE-2020-16898
• CVE-2020-1920
• CVE-2021-22893
• CVE-2021-23388
• CVE-2021-24316