Known Exploited Vulnerabilities Catalog

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild. Organizations should use the KEV catalog as an input to their vulnerability management prioritization framework.

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Showing 1221 - 1240 of 1352
Microsoft | Windows

CVE-2021-34527

Microsoft Windows Print Spooler Remote Code Execution Vulnerability: Microsoft Windows Print Spooler contains an unspecified vulnerability due to the Windows Print Spooler service improperly performing privileged file operations. Successful exploitation allows an attacker to perform remote code execution with SYSTEM privileges. The vulnerability is also known under the moniker of PrintNightmare.

Related CWE: CWE-269

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-07-20
Additional Notes
Reference CISA's ED 21-04 (https://www.cisa.gov/news-events/directives/ed-21-04-mitigate-windows-print-spooler-service-vulnerability) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-04. https://nvd.nist.gov/vuln/detail/CVE-2021-34527
Microsoft | Exchange Server

CVE-2021-31207

Microsoft Exchange Server Security Feature Bypass Vulnerability: Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.

Related CWEs: CWE-20| CWE-434

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-31207
Microsoft | Win32k

CVE-2019-0803

Microsoft Win32k Privilege Escalation Vulnerability: Microsoft Win32k contains an unspecified vulnerability due to it failing to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0803
Microsoft | Hyper-V RemoteFX

CVE-2020-1040

Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability: Microsoft Hyper-V RemoteFX vGPU contains an improper input validation vulnerability due to the host server failing to properly validate input from an authenticated user on a guest operating system. Successful exploitation allows for remote code execution on the host operating system.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-1040
Microsoft | Win32k

CVE-2021-28310

Microsoft Win32k Privilege Escalation Vulnerability: Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.

Related CWE: CWE-787

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-28310
Microsoft | Windows

CVE-2020-1350

Microsoft Windows DNS Server Remote Code Execution Vulnerability: Microsoft Windows DNS Servers fail to properly handle requests, allowing an attacker to perform remote code execution in the context of the Local System Account. The vulnerability is also known under the moniker of SIGRed.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2020-07-24
Additional Notes
Reference CISA's ED 20-03 (https://www.cisa.gov/news-events/directives/ed-20-03-mitigate-windows-dns-server-remote-code-execution-vulnerability-july-2020-patch-tuesday) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 20-03. https://nvd.nist.gov/vuln/detail/CVE-2020-1350
Microsoft | Internet Explorer

CVE-2021-26411

Microsoft Internet Explorer Memory Corruption Vulnerability: Microsoft Internet Explorer contains an unspecified vulnerability that allows for memory corruption.

Related CWE: CWE-416

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-26411
Microsoft | Win32k

CVE-2019-0859

Microsoft Win32k Privilege Escalation Vulnerability: Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0859
Microsoft | MSHTML

CVE-2021-40444

Microsoft MSHTML Remote Code Execution Vulnerability: Microsoft MSHTML contains a unspecified vulnerability that allows for remote code execution.

Related CWE: CWE-22

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-40444
Microsoft | .NET Framework

CVE-2017-8759

Microsoft .NET Framework Remote Code Execution Vulnerability: Microsoft .NET Framework contains a remote code execution vulnerability when processing untrusted input that could allow an attacker to take control of an affected system.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2017-8759
Microsoft | Internet Explorer

CVE-2018-8653

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability: Microsoft Internet Explorer contains a memory corruption vulnerability due to how the Scripting Engine handles objects in memory, leading to remote code execution.

Related CWE: CWE-787

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-8653
Microsoft | Win32k

CVE-2019-0797

Microsoft Win32k Privilege Escalation Vulnerability: Microsoft Win32k contains a privilege escalation vulnerability when the Win32k component fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0797
Microsoft | Windows

CVE-2021-36942

Microsoft Windows Local Security Authority (LSA) Spoofing Vulnerability: Microsoft Windows Local Security Authority (LSA) contains a spoofing vulnerability allowing an unauthenticated attacker to call a method on the LSARPC interface and coerce the domain controller to authenticate against another server using NTLM.

Related CWE: CWE-749

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-36942
Microsoft | Windows

CVE-2019-1215

Microsoft Windows Privilege Escalation Vulnerability: Microsoft Windows contains an unspecified vulnerability due to the way ws2ifsl.sys (Winsock) handles objects in memory, allowing for privilege escalation. Successful exploitation allows an attacker to execute code with elevated privileges.

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-1215
Microsoft | Office

CVE-2018-0798

Microsoft Office Memory Corruption Vulnerability: Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory. Successful exploitation allows for remote code execution in the context of the current user. This vulnerability is known to be chained with CVE-2018-0802.

Related CWE: CWE-787

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0798
Microsoft | Office

CVE-2018-0802

Microsoft Office Memory Corruption Vulnerability: Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory. Successful exploitation allows for remote code execution in the context of the current user. This vulnerability is known to be chained with CVE-2018-0798.

Related CWE: CWE-787

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0802
Microsoft | MSCOMCTL.OCX

CVE-2012-0158

Microsoft MSCOMCTL.OCX Remote Code Execution Vulnerability: Microsoft MSCOMCTL.OCX contains an unspecified vulnerability that allows for remote code execution, allowing an attacker to take complete control of an affected system under the context of the current user.

Related CWE: CWE-94

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2012-0158
Microsoft | Office

CVE-2015-1641

Microsoft Office Memory Corruption Vulnerability: Microsoft Office contains a memory corruption vulnerability due to failure to properly handle rich text format files in memory. Successful exploitation allows for remote code execution in the context of the current user.

Related CWE: CWE-399

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2015-1641
Microsoft | Internet Explorer

CVE-2021-27085

Microsoft Internet Explorer Remote Code Execution Vulnerability: Microsoft Internet Explorer contains an unspecified vulnerability that allows for remote code execution.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2021-11-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27085
Microsoft | MSHTML

CVE-2019-0541

Microsoft MSHTML Remote Code Execution Vulnerability: Microsoft MSHTML engine contains an improper input validation vulnerability that allows for remote code execution vulnerability.

Related CWE: CWE-77

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2021-11-03
  • Due Date: 2022-05-03
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0541

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