MUDDYWATER

RANSOMWARE

MUDDYWATER is an elusive ransomware group that primarily targets organizations within the technology and telecommunications sectors, focusing on critical infrastructure such as network devices and servers. The group's initial access method remains unclear due to a lack of confirmed data but is believed to involve exploiting unpatched vulnerabilities in widely used software products. Once inside a network, MUDDYWATER employs double extortion tactics, encrypting sensitive data and threatening further leaks unless ransom demands are met. This approach distinguishes the group from others by emphasizing both encryption and exfiltration, creating significant pressure on victims.

Based on the 44 predicted CVEs linked to MUDDYWATER, the majority of exploited vulnerabilities fall into categories such as Remote Code Execution (RCE) and Authentication Bypass, indicating a preference for gaining deep access within networks. The group's reliance on critical and high-severity vulnerabilities suggests a sophisticated understanding of network security weaknesses. Defenders should prioritize patch management for known vulnerabilities, particularly those in the CRITICAL severity range, to mitigate the risk of exploitation by MUDDYWATER.

Predicted CVEs (66) CORRELATION

How does prediction work?

Predicted CVEs are identified through automated correlation using multiple sources: vendor/product profiles historically targeted by the group (MITRE ATT&CK), attack chain patterns (KEV + TTPs), threat intelligence (MISP, STIX), and AI analysis. These CVEs have not been confirmed as exploited by this specific group, but have a high probability of being targets based on the actor's operational profile.

CVE-2020-0796 CRITICAL Microsoft Windows 10 Version 1903 for 32-bit Systems predicted 10.0 CVE-2020-0796 CRITICAL Microsoft Windows 10 Version 1903 for 32-bit Systems predicted 10.0 CVE-2020-1350 CRITICAL Microsoft Windows Server predicted 10.0 CVE-2025-53770 CRITICAL Microsoft SharePoint Enterprise Server 2016 predicted 9.8 CVE-2021-31166 CRITICAL Microsoft Windows 10 Version 2004 predicted 9.8 CVE-2024-49035 CRITICAL Microsoft Partner Center predicted 9.8 CVE-2025-53770 CRITICAL Microsoft SharePoint Enterprise Server 2016 predicted 9.8 CVE-2023-29357 CRITICAL Microsoft SharePoint Server 2019 predicted 9.8 CVE-2021-38647 CRITICAL Microsoft Open Management Infrastructure predicted 9.8 CVE-2021-38647 CRITICAL Microsoft Open Management Infrastructure predicted 9.8 CVE-2020-0646 CRITICAL Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 predicted 9.8 CVE-2025-24989 CRITICAL Microsoft Power Pages predicted 9.8 CVE-2023-29357 CRITICAL Microsoft SharePoint Server 2019 predicted 9.8 CVE-2023-23397 CRITICAL Microsoft Office LTSC 2021 predicted 9.8 CVE-2026-20963 CRITICAL Microsoft SharePoint Enterprise Server 2016 predicted 9.8 CVE-2024-21410 CRITICAL Microsoft Exchange Server 2016 Cumulative Update 23 predicted 9.8 CVE-2025-59287 CRITICAL Microsoft Windows Server 2012 predicted 9.8 CVE-2024-43468 CRITICAL Microsoft Configuration Manager predicted 9.8 CVE-2024-21413 CRITICAL Microsoft Office 2019 predicted 9.8 CVE-2021-34473 CRITICAL Microsoft Exchange Server 2013 Cumulative Update 23 predicted 9.1 CVE-2021-26855 CRITICAL Microsoft Exchange Server 2016 Cumulative Update 19 predicted 9.1 CVE-2020-1040 CRITICAL Microsoft Windows Server predicted 9.0 CVE-2023-21529 HIGH Microsoft Exchange Server 2019 Cumulative Update 12 predicted 8.8 CVE-2020-0688 HIGH Microsoft Exchange Server 2013 medium 8.8 CVE-2021-42321 HIGH Microsoft Exchange Server 2016 Cumulative Update 21 predicted 8.8 CVE-2022-41080 HIGH Microsoft Exchange Server 2016 Cumulative Update 23 predicted 8.8 CVE-2025-49704 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 8.8 CVE-2021-42321 HIGH Microsoft Exchange Server 2016 Cumulative Update 21 predicted 8.8 CVE-2025-49704 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 8.8 CVE-2022-41040 HIGH Microsoft Exchange Server 2013 Cumulative Update 23 predicted 8.8 CVE-2020-0688 HIGH Microsoft Exchange Server 2013 predicted 8.8 CVE-2022-41080 HIGH Microsoft Exchange Server 2016 Cumulative Update 23 predicted 8.8 CVE-2021-34527 HIGH Microsoft Windows 10 Version 1809 predicted 8.8 CVE-2024-21412 HIGH Microsoft Windows 11 version 21H2 predicted 8.1 CVE-2024-21412 HIGH Microsoft Windows 11 version 21H2 predicted 8.1 CVE-2022-41082 HIGH Microsoft Exchange Server 2013 Cumulative Update 23 predicted 8.0 CVE-2022-41082 HIGH Microsoft Exchange Server 2013 Cumulative Update 23 predicted 8.0 CVE-2022-30190 HIGH Microsoft Windows 10 Version 1809 predicted 7.8 CVE-2024-26169 HIGH Microsoft Windows 10 Version 1809 predicted 7.8 CVE-2023-28252 HIGH Microsoft Windows 10 Version 1809 predicted 7.8 CVE-2021-1675 HIGH Microsoft Windows 10 Version 1809 predicted 7.8 CVE-2020-0787 HIGH Microsoft Windows predicted 7.8 CVE-2023-36884 HIGH Microsoft Windows 10 Version 1809 predicted 7.5 CVE-2021-36942 HIGH Microsoft Windows Server 2019 predicted 7.5 CVE-2021-42287 HIGH Microsoft Windows Server 2019 predicted 7.5 CVE-2021-42278 HIGH Microsoft Windows Server 2019 predicted 7.5 CVE-2021-42287 HIGH Microsoft Windows Server 2019 predicted 7.5 CVE-2021-36942 HIGH Microsoft Windows Server 2019 predicted 7.5 CVE-2023-36884 HIGH Microsoft Windows 10 Version 1809 predicted 7.5 CVE-2023-24955 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 7.2 CVE-2023-24955 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 7.2 CVE-2024-38094 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 7.2 CVE-2024-38094 HIGH Microsoft SharePoint Enterprise Server 2016 predicted 7.2 CVE-2021-43890 HIGH Microsoft App Installer predicted 7.1 CVE-2021-43890 HIGH Microsoft App Installer predicted 7.1 CVE-2021-31207 MEDIUM Microsoft Exchange Server 2013 Cumulative Update 23 predicted 6.6 CVE-2025-49706 MEDIUM Microsoft SharePoint Enterprise Server 2016 predicted 6.5 CVE-2025-49706 MEDIUM Microsoft SharePoint Enterprise Server 2016 predicted 6.5 CVE-2020-1472 MEDIUM Microsoft Windows Server version 2004 medium 5.5 CVE-2020-1472 MEDIUM Microsoft Windows Server version 2004 predicted 5.5 CVE-2022-44698 MEDIUM Microsoft Windows 10 Version 1809 predicted 5.4 CVE-2022-41091 MEDIUM Microsoft Windows 10 Version 1809 predicted 5.4 CVE-2022-41091 MEDIUM Microsoft Windows 10 Version 1809 predicted 5.4 CVE-2022-44698 MEDIUM Microsoft Windows 10 Version 1809 predicted 5.4 CVE-2020-0878 MEDIUM Microsoft ChakraCore predicted 4.2 CVE-2020-0878 MEDIUM Microsoft ChakraCore predicted 4.2