CVE-2021-28480

CRITICAL NUCLEI

Microsoft Exchange Server - Remote Code Execution

Title source: rule

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

Exploits (3)

nomisec TROJAN 10 stars
by ZephrFish · poc
https://github.com/ZephrFish/CVE-2021-28480_HoneyPoC3
nomisec STUB
by Threonic · poc
https://github.com/Threonic/CVE-2021-28480
inthewild TROJAN
poc
https://github.com/zephrfish/exchangerce-cve-2021-28480

Nuclei Templates (1)

Microsoft Exchange - Pre-Auth SSRF / ACL Bypass (ProxyNotFound)
CRITICALby daffainfo
Shodan: http.favicon.hash:1768726119 || http.title:"outlook" || cpe:"cpe:2.3:a:microsoft:exchange_server"
FOFA: title="outlook" || icon_hash=1768726119

References (1)

Scores

CVSS v3 9.8
EPSS 0.8714
EPSS Percentile 99.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (3)
microsoft/exchange_server 2013 cumulative_update_23
microsoft/exchange_server 2016 cumulative_update_19 (2 CPE variants)
microsoft/exchange_server 2019 cumulative_update_8 (2 CPE variants)
Published Apr 13, 2021
Tracked Since Feb 18, 2026