KLA12103
ACE vulnerabilities in Microsoft Exchange Server

Remote code execution vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit this vulnerability to execute arbitrary code.

This vulnerability can be exploited by the following malware:

https://threats.kaspersky.com/en/threat/Exploit.Script.CVE-2021-26855/

The following public exploits exists for this vulnerability:

https://github.com/sgnls/exchange-0days-202103

https://github.com/soteria-security/HAFNIUM-IOC

https://github.com/cert-lv/exchange_webshell_detection

https://github.com/conjojo/Microsoft_Exchange_Server_SSRF_CVE-2021-26855

https://github.com/pussycat0x/CVE-2021-26855-SSRF

https://github.com/0xAbdullah/CVE-2021-26855

https://github.com/Th3eCrow/CVE-2021-26855-SSRF-Exchange

https://github.com/mekhalleh/exchange_proxylogon

https://github.com/Yt1g3r/CVE-2021-26855_SSRF

https://github.com/charlottelatest/CVE-2021-26855

https://github.com/dwisiswant0/proxylogscan

https://github.com/mauricelambert/ExchangeWeaknessTest

https://github.com/DCScoder/Exchange_IOC_Hunter

https://github.com/srvaccount/CVE-2021-26855-PoC

https://github.com/h4x0r-dz/CVE-2021-26855

https://github.com/alt3kx/CVE-2021-26855_PoC

https://github.com/achabahe/CVE-2021-26855

https://github.com/raheel0x01/CVE-2021-26855

https://github.com/hackerschoice/CVE-2021-26855

https://github.com/SCS-Labs/HAFNIUM-Microsoft-Exchange-0day

https://github.com/KotSec/CVE-2021-26855-Scanner

https://github.com/hakivvi/proxylogon

https://github.com/ZephrFish/Exch-CVE-2021-26855

https://github.com/mil1200/ProxyLogon-CVE-2021-26855

https://github.com/evilashz/ExchangeSSRFtoRCEExploit

https://github.com/Mr-xn/CVE-2021-26855-d

https://github.com/RickGeex/ProxyLogon

https://github.com/Immersive-Labs-Sec/ProxyLogon

https://github.com/shacojx/Scan-Vuln-CVE-2021-26855

https://github.com/SotirisKar/CVE-2021-26855

https://github.com/TaroballzChen/ProxyLogon-CVE-2021-26855-metasploit

https://github.com/p0wershe11/ProxyLogon

https://github.com/r0ckysec/CVE-2021-26855_Exchange

https://github.com/shacojx/CVE-2021-26855-exploit-Exchange

https://github.com/hictf/CVE-2021-26855-CVE-2021-27065

https://github.com/praetorian-inc/proxylogon-exploit

https://github.com/Flangvik/SharpProxyLogon

https://github.com/hosch3n/ProxyVulns

https://github.com/Nick-Yin12/106362522

https://github.com/yaoxiaoangry3/Flangvik

https://github.com/byinarie/Zirconium

https://github.com/hosch3n/ProxyLogon

https://github.com/heikanet/Microsoft-Exchange-RCE

https://github.com/iceberg-N/cve-2021-26855

Microsoft Exchange Server 2019 Cumulative Update 8
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2016 Cumulative Update 18
Microsoft Exchange Server 2010 Service Pack 3
Microsoft Exchange Server 2016 Cumulative Update 19
Microsoft Exchange Server 2019 Cumulative Update 7

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

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