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Ransomware Intelligence

CISA flags a vulnerability as "used by ransomware" only when a campaign is confirmed. These are flaws extortion groups have already exploited: fixing them first removes the most concrete risk.

361
CVEs used by ransomware · 21% of the KEV catalog
3
added in the last 90 days
173
critical
121
victims posted (30 days)
408
groups tracked

Vendors most exploited by ransomware

Most common weaknesses (CWE)

By year added to KEV

Most active groups (30 days)

Victims posted on leak sites, according to ransomware.live. Victim names are not displayed.

GroupVictimsLast activity
N0n 41 13h
Wallstreet 13 1d
qilin 9 1d
interlock 6 3d
play 5 2d
akira 3 1d
AuditTeam 3 2d
Dark Project 3 3d
lockbit5 3 1d
Emperador 3 8h
everest 3 2d
iah6477 3 6h
All groups →

Most affected countries (30 days)

  • United States25
  • Sweden10
  • Brazil8
  • South Korea8
  • United Kingdom5
  • Singapore4
  • India4
  • Spain3
  • Germany3
  • Japan3

Most affected sectors (30 days)

  • Transportation28
  • Professional Services19
  • Healthcare13
  • Manufacturing11
  • Other10
  • Retail & E-Commerce8
  • Technology7
  • Financial Services3
  • Energy & Utilities3
  • Hospitality2

Groups and the CVEs they exploit

clop 5akira 3alphv 3conti 3hive 3play 3medusa 2vicesociety 2atomsilo 1blackbyte 1blackshadow 1BrainCipher 1esxiargs 1frag 1handala 1icefire 1incransom 1karma 1lockbit 1maze 1nightsky 1nightspire 1nokoyawa 1revil 1reynolds 1underground 1

CVEs used in ransomware campaigns

Severity
Clear

11 result(s)

CVE-2026-59310 Critical · 9.8 KEV Urgent · 77 Public exploit Ransomware CWE-22 Jul 30, 2026
Broadcom VMware vCenter Path Traversal Vulnerability
VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.
CVE-2025-22225 High · 8.2 KEV High · 60 Ransomware CWE-787 Mar 4, 2025
VMware ESXi Arbitrary Write Vulnerability
VMware ESXi contains an arbitrary write vulnerability. A malicious actor with privileges within the VMX process may trigger an arbitrary kernel write leading to an escape of the sandbox.
CVE-2024-37085 High · 7.2 KEV Urgent · 82 Public exploit Ransomware CWE-287 Jun 25, 2024
VMware ESXi Authentication Bypass Vulnerability
VMware ESXi contains an authentication bypass vulnerability. A malicious actor with sufficient Active Directory (AD) permissions can gain full access to an ESXi host that was previously configured to use AD for user management https://blogs.vmware.com/vsphere/2012/09/joining-vsphere-hosts-to-active-directory.html by re-creating the configured AD group ('ESXi Admins' by default) after it was deleted from AD.
CVE-2022-22954 Critical · 9.8 KEV Urgent · 93 Public exploit Ransomware CWE-94 Apr 11, 2022
VMware Workspace ONE Access and Identity Manager Server-Side Template Injection Vulnerability
VMware Workspace ONE Access and Identity Manager contain a remote code execution vulnerability due to server-side template injection. A malicious actor with network access can trigger a server-side template injection that may result in remote code execution.
CVE-2018-1273 Critical · 9.8 KEV Urgent · 77 Public exploit Ransomware CWE-94 Apr 11, 2018
VMware Tanzu Spring Data Commons Property Binder Vulnerability
Spring Data Commons, versions prior to 1.13 to 1.13.10, 2.0 to 2.0.5, and older unsupported versions, contain a property binder vulnerability caused by improper neutralization of special elements. An unauthenticated remote malicious user (or attacker) can supply specially crafted request parameters against Spring Data REST backed HTTP resources or using Spring Data's projection-based request payload binding hat can lead to a remote code execution attack.
CVE-2021-21975 High · 7.5 KEV Urgent · 85 Public exploit Ransomware CWE-918 Mar 31, 2021
VMware Server Side Request Forgery in vRealize Operations Manager API
Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API can perform a Server Side Request Forgery attack to steal administrative credentials.
CVE-2021-21985 Critical · 9.8 KEV Urgent · 89 Public exploit Ransomware CWE-918 May 26, 2021
VMware vCenter Server Improper Input Validation Vulnerability
The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server.
CVE-2021-21972 Critical · 9.8 KEV Urgent · 93 Public exploit Ransomware CWE-22 Feb 24, 2021
VMware vCenter Server Remote Code Execution Vulnerability
The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).
CVE-2021-22005 Critical · 9.8 KEV Urgent · 93 Public exploit Ransomware CWE-22 Sep 23, 2021
VMware vCenter Server File Upload Vulnerability
The vCenter Server contains an arbitrary file upload vulnerability in the Analytics service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to execute code on vCenter Server by uploading a specially crafted file.
CVE-2020-3992 Critical · 9.8 KEV Urgent · 73 Ransomware CWE-416 Oct 20, 2020
VMware ESXi OpenSLP Use-After-Free Vulnerability
OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.
CVE-2019-5544 Critical · 9.8 KEV Urgent · 77 Public exploit Ransomware CWE-787 Dec 6, 2019
VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.

Sources: CISA KEV (knownRansomwareCampaignUse field) and ransomware.live (groups, TTPs and victim counts). The absence of a KEV flag does not mean a flaw is not used by ransomware.