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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
364
victims posted (30 days)
412
groups tracked
Vendors most exploited by ransomware
Most common weaknesses (CWE)
- CWE-22 · Path Traversal36
- CWE-787 · Out-of-bounds Write27
- CWE-502 · Deserialization of Untrusted Data25
- CWE-94 · Code Injection15
- CWE-287 · Improper Authentication14
- CWE-306 · Missing Authentication for Critical Function14
- CWE-78 · OS Command Injection14
- CWE-59 · Link Following13
- CWE-416 · Use After Free11
- CWE-918 · Server-Side Request Forgery (SSRF)10
Most active groups (30 days)
Victims posted on leak sites, according to ransomware.live. Victim names are not displayed.
| Group | Victims | Last activity |
|---|---|---|
| N0n | 97 | 11h |
| qilin | 37 | 2d |
| thegentlemen | 35 | 4d |
| Wallstreet | 15 | 5d |
| everest | 11 | 7h |
| lockbit5 | 10 | 2d |
| incransom | 10 | 8h |
| play | 9 | 5d |
| Helix | 9 | 17h |
| akira | 8 | 19h |
| BrainCipher | 8 | 14h |
| iah6477 | 8 | 3d |
Most affected countries (30 days)
- United States135
- Brazil16
- Germany15
- South Korea13
- United Kingdom12
- Sweden10
- Singapore6
- Spain6
- Japan6
- India6
Most affected sectors (30 days)
- Manufacturing44
- Professional Services42
- Healthcare38
- Transportation38
- Technology32
- Other23
- Retail & E-Commerce18
- Financial Services15
- Education12
- Energy & Utilities11
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 1CVEs used in ransomware campaigns
27 result(s)
CVE-2021-1732
High · 7.8
KEV Urgent · 94 Public exploit Ransomware CWE-787 Feb 25, 2021
Microsoft Win32k Privilege Escalation Vulnerability
Windows Win32k Elevation of Privilege Vulnerability
CVE-2020-0878
Medium · 4.2
KEV High · 61 Ransomware CWE-787 Sep 11, 2020
Microsoft Edge and Internet Explorer Memory Corruption Vulnerability
<p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p>
<p>An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.</p>
<p>The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.</p>
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.