CVE-2021-28483

Microsoft Exchange Server Remote Code Execution Vulnerability

Critical ยท published April 13, 2021

CVSS v3.1
9.0
EPSS
1%
Percentile
67.9
In the wild
Unconfirmed
What it is

๐Ÿšจ A single remote command can turn your Microsoft Exchange Server into an attacker's playground. ๐Ÿ”ฅ Think of this vulnerability as a restaurant where any delivery van can drop off food without verifying the order โ€” it leads to chaos in the kitchen! ๐Ÿ” An attacker could execute arbitrary code on your server, effectively taking control of it. This opens the door to data theft, sabotage, or even using your server as a launchpad for further attacks. The potential consequences are absolutely devastating!

Put simply

Think of this vulnerability as a restaurant where any delivery van can drop off food without verifying the order โ€” it leads to chaos in the kitchen! ๐Ÿ” This vulnerability allows an unauthenticated attacker to send a specially crafted request to the Microsoft Exchange Server, leading to remote code execution and full server compromise.

What to do

An attacker could execute arbitrary code on your server, effectively taking control of it. This opens the door to data theft, sabotage, or even using your server as a launchpad for further attacks. The potential consequences are absolutely devastating! Patch your Microsoft Exchange Server immediately to the latest version to close this severe vulnerability. Ensure that your firewall and other security measures are also in place to limit exposure. Don't forget to conduct an audit of your server's security settings! You've got this! With these steps, you'll fortify your defenses and keep your server safe! ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS v3.1
9.0 ยท CRITICAL
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.01196 ยท 67.9th percentile
Published
2021-04-13T19:33Z
EPSS history
Timeline
  • 13 APR 19:33Z
    Microsoft Exchange Server Remote Code Execution Vulnerability
    cvelistv5