Exploited vulnerabilities
The vulnerabilities attackers actually use, gathered from public sources and ranked by priority. Updated automatically, every day.
1,784exploited vulnerabilities tracked
7added in 7 days
36added in 30 days
38rising fast
361used by ransomware
665to fix within 24 h
| CVE | Product | EPSS |
|---|---|---|
| CVE-2015-1635 | Microsoft HTTP.sys Remote Code Execution Vulnerability | 100.00% |
| CVE-2022-21882 | Microsoft Win32k Privilege Escalation Vulnerability | 59.2% |
| CVE-2020-0787 | Microsoft Windows Background Intelligent Transfer Service (BITS) Improper Privilege Management Vulnerability | 42.5% |
| CVE-2014-1776 | Microsoft Internet Explorer Memory Corruption Vulnerability | 82.7% |
| CVE-2018-8453 | Microsoft Win32k Privilege Escalation Vulnerability | 70.0% |
| CVE-2021-33766 | Microsoft Exchange Server Information Disclosure | 98.2% |
| CVE-2019-1458 | Microsoft Win32k Privilege Escalation Vulnerability | 74.4% |
| CVE-2013-3900 | Microsoft WinVerifyTrust function Remote Code Execution | 44.6% |
| CVE-2021-43890 | Microsoft Windows AppX Installer Spoofing Vulnerability | 11.3% |
| CVE-2021-42321 | Microsoft Exchange Server Remote Code Execution Vulnerability | 91.7% |
| CVE-2021-42292 | Microsoft Excel Security Feature Bypass | 43.0% |
| CVE-2021-40449 | Microsoft Windows Win32k Privilege Escalation Vulnerability | 81.9% |
| CVE-2021-40444 | Microsoft MSHTML Remote Code Execution Vulnerability | 97.8% |
| CVE-2021-38649 | Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability | 2.9% |
| CVE-2021-38648 | Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability | 11.4% |
| CVE-2021-38647 | Microsoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability | 99.9% |
| CVE-2021-38645 | Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability | 2.7% |
| CVE-2021-36955 | Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability | 4.1% |
| CVE-2021-36948 | Microsoft Windows Update Medic Service Privilege Escalation Vulnerability | 23.3% |
| CVE-2021-36942 | Microsoft Windows Local Security Authority (LSA) Spoofing Vulnerability | 66.0% |
| CVE-2021-34527 | Microsoft Windows Print Spooler Remote Code Execution Vulnerability | 99.8% |
| CVE-2021-34523 | Microsoft Exchange Server Privilege Escalation Vulnerability | 99.99% |
| CVE-2021-34473 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.00% |
| CVE-2021-34448 | Microsoft Windows Scripting Engine Memory Corruption Vulnerability | 40.1% |
| CVE-2021-33771 | Microsoft Windows Kernel Privilege Escalation Vulnerability | 10.2% |
| CVE-2021-33742 | Microsoft Windows MSHTML Platform Remote Code Execution Vulnerability | 59.4% |
| CVE-2021-33739 | Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability | 6.6% |
| CVE-2021-31979 | Microsoft Windows Kernel Privilege Escalation Vulnerability | 4.5% |
| CVE-2021-31956 | Microsoft Windows NTFS Privilege Escalation Vulnerability | 22.3% |
| CVE-2021-31955 | Microsoft Windows Kernel Information Disclosure Vulnerability | 81.1% |
How we rank vulnerabilities
A vulnerability joins this list as soon as CISA adds it to its KEV catalog or ENISA flags it as exploited in the EUVD.
The CheckOps priority index, out of 10, combines severity (CVSS), the probability of exploitation within 30 days (EPSS, FIRST) and public exploitation signals.
Above 8, we recommend patching within 24 hours; above 6, or as soon as a vulnerability is exploited, within 7 days.
Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors.