Known Exploited Vulnerabilities

Focus on What Matters

There are 349,964 vulnerabilities in the CVE database.
Whilst only 1.1% are ever actively exploited.

This list contains the vulnerabilities that are actively exploited by malware and threat actors that you should prioritize first.

This table displays known exploited vulnerabilities (KEVs) that have been cataloged from over 60 public sources, including CISA, and our own private sensors. Each entry links to a CVE identifier, where the CVE details are enriched with EPSS scores, online mentions, scanner inclusion, exploitation, tags, and other metadata. The goal is to be an early warning system, even before being published by CISA. More data and features coming soon!

Aware of a KEV not on the list? Let us know!

CVE ID	Title	Vendor	Product	Added	Source
CVE-2021-44228	Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints	Apache Software Foundation	Apache Log4j2	2021-12-10 00:00:00 UTC	CISA
CVE-2019-10758	mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the `toBSON` method. A misuse of the `vm` dependency to...	mongo-express	mongo-express	2021-12-10 00:00:00 UTC	CISA
CVE-2021-40438	mod_proxy SSRF	Apache Software Foundation	Apache HTTP Server	2021-12-01 00:00:00 UTC	CISA
CVE-2021-37415	Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.	Zoho	ManageEngine ServiceDesk Plus	2021-12-01 00:00:00 UTC	CISA
CVE-2021-44077	Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to...	Zoho	ManageEngine ServiceDesk Plus, ManageEngine ServiceDesk Plus MSP, ManageEngine SupportCenter Plus	2021-12-01 00:00:00 UTC	CISA
CVE-2021-40438	mod_proxy SSRF	Apache Software Foundation	Apache HTTP Server	2021-12-01 00:00:00 UTC	CISA
CVE-2021-37415	Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.	Zoho	ManageEngine ServiceDesk Plus	2021-12-01 00:00:00 UTC	CISA
CVE-2018-14847	MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write...	MikroTik	RouterOS	2021-12-01 00:00:00 UTC	CISA
CVE-2020-11261	Memory corruption due to improper check to return error when user application requests memory allocation of a huge size in Snapdragon Auto,...	Qualcomm, Inc.	Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables	2021-12-01 00:00:00 UTC	CISA
CVE-2018-14847	MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write...	MikroTik	RouterOS	2021-12-01 00:00:00 UTC	CISA
CVE-2020-11261	Memory corruption due to improper check to return error when user application requests memory allocation of a huge size in Snapdragon Auto,...	Qualcomm, Inc.	Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables	2021-12-01 00:00:00 UTC	CISA
CVE-2021-44077	Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to...	Zoho	ManageEngine ServiceDesk Plus, ManageEngine ServiceDesk Plus MSP, ManageEngine SupportCenter Plus	2021-12-01 00:00:00 UTC	CISA
CVE-2021-42292	Microsoft Excel Security Feature Bypass Vulnerability	Microsoft	Microsoft Office 2019, Microsoft Office 2019 for Mac, Microsoft 365 Apps for Enterprise, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC 2021, Microsoft Excel 2016, Microsoft Office 2016, Microsoft Excel 2013 Service Pack 1, Microsoft Office 2013 Service Pack 1	2021-11-17 00:00:00 UTC	CISA
CVE-2021-42321	Microsoft Exchange Server Remote Code Execution Vulnerability	Microsoft	Microsoft Exchange Server 2016 Cumulative Update 21, Microsoft Exchange Server 2019 Cumulative Update 10, Microsoft Exchange Server 2016 Cumulative Update 22, Microsoft Exchange Server 2019 Cumulative Update 11	2021-11-17 00:00:00 UTC	CISA
CVE-2021-40449	Win32k Elevation of Privilege Vulnerability	Microsoft	Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)	2021-11-17 00:00:00 UTC	CISA
CVE-2021-22204	Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the...	ExifTool	ExifTool	2021-11-17 00:00:00 UTC	CISA
CVE-2021-42321	Microsoft Exchange Server Remote Code Execution Vulnerability	Microsoft	Microsoft Exchange Server 2016 Cumulative Update 21, Microsoft Exchange Server 2019 Cumulative Update 10, Microsoft Exchange Server 2016 Cumulative Update 22, Microsoft Exchange Server 2019 Cumulative Update 11	2021-11-17 00:00:00 UTC	CISA
CVE-2021-40449	Win32k Elevation of Privilege Vulnerability	Microsoft	Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)	2021-11-17 00:00:00 UTC	CISA
CVE-2021-22204	Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the...	ExifTool	ExifTool	2021-11-17 00:00:00 UTC	CISA
CVE-2021-42292	Microsoft Excel Security Feature Bypass Vulnerability	Microsoft	Microsoft Office 2019, Microsoft Office 2019 for Mac, Microsoft 365 Apps for Enterprise, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC 2021, Microsoft Excel 2016, Microsoft Office 2016, Microsoft Excel 2013 Service Pack 1, Microsoft Office 2013 Service Pack 1	2021-11-17 00:00:00 UTC	CISA
CVE-2019-1215	An elevation of privilege vulnerability exists in the way that ws2ifsl.sys (Winsock) handles objects in memory, aka 'Windows Elevation of Privilege...	Microsoft	Windows, Windows Server, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation)	2021-11-03 00:00:00 UTC	CISA
CVE-2021-36942	Windows LSA Spoofing Vulnerability	Microsoft	Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server version 2004, Windows Server version 20H2, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)	2021-11-03 00:00:00 UTC	CISA
CVE-2019-0797	An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k...	Microsoft	Windows Server, Windows	2021-11-03 00:00:00 UTC	CISA
CVE-2018-8653	A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting...	Microsoft	Internet Explorer 9, Internet Explorer 11, Internet Explorer 10	2021-11-03 00:00:00 UTC	CISA
CVE-2017-8759	Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or...	Microsoft Corporation	Microsoft .NET Framework	2021-11-03 00:00:00 UTC	CISA

Displaying vulnerabilities 3076 - 3100 of 3822 in total