CISA Known Exploited Vulnerabilities (KEV)
CISA's Known Exploited Vulnerabilities (KEV) catalog lists vulnerabilities actively used in real-world attacks. CVEFeed.io tracks the latest additions so you can prioritize remediation as new entries are published.
10.0
CVE-2019-0708 - Microsoft Remote Desktop Services Remote Code Execution Vulnerability -
Action Due May 03, 2022 Target Vendor : Microsoft
Description :Microsoft Remote Desktop Services, formerly known as Terminal Service, contains an unspecified vulnerability that allows an unauthenticated attacker to connect to the target system using RDP and send specially crafted requests. Successful exploitation allows for remote code execution. The vulnerability is also known under the moniker of BlueKeep.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Known Detected Feb 26, 2026
Notes :https://nvd.nist.gov/vuln/detail/CVE-2019-0708
7.8
CVE-2016-7255 - Microsoft Win32k Privilege Escalation Vulnerability -
Action Due May 03, 2022 Target Vendor : Microsoft
Description :Microsoft Win32k kernel-mode driver fails to properly handle objects in memory which allows for privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2016-7255
9.0
CVE-2020-0688 - Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability -
Action Due May 03, 2022 Target Vendor : Microsoft
Description :Microsoft Exchange Server Validation Key fails to properly create unique keys at install time, allowing for remote code execution.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Known Detected Nov 03, 2021
Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-0688
9.8
CVE-2021-34523 - Microsoft Exchange Server Privilege Escalation Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Microsoft
Description :Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Known Detected Nov 03, 2021
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-34523
7.8
CVE-2020-0938 - Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability -
Action Due May 03, 2022 Target Vendor : Microsoft
Description :Microsoft Windows Adobe Font Manager Library contains an unspecified vulnerability when handling specially crafted multi-master fonts (Adobe Type 1 PostScript format) that allows for remote code execution for all systems except Windows 10. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-0938
8.8
CVE-2021-21220 - Google Chromium V8 Improper Input Validation Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Google
Description :Google Chromium V8 Engine contains an improper input validation vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-21220
8.8
CVE-2021-21224 - Google Chromium V8 Type Confusion Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Google
Description :Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to execute code inside a sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-21224
9.6
CVE-2020-16010 - Google Chrome for Android UI Heap Buffer Overflow Vulnerability -
Action Due May 03, 2022 Target Vendor : Google
Description :Google Chrome for Android UI contains a heap buffer overflow vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a crafted HTML page.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-16010
9.8
CVE-2019-11634 - Citrix Workspace Application and Receiver for Windows Remote Code Execution Vulnerability -
Action Due May 03, 2022 Target Vendor : Citrix
Description :Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Known Detected Nov 03, 2021
Notes :https://nvd.nist.gov/vuln/detail/CVE-2019-11634
9.8
CVE-2019-19781 - Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability -
Action Due May 03, 2022 Target Vendor : Citrix
Description :Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Known Detected Nov 03, 2021
Notes :https://nvd.nist.gov/vuln/detail/CVE-2019-19781
7.8
CVE-2021-31979 - Microsoft Windows Kernel Privilege Escalation Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Microsoft
Description :Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-31979
7.5
CVE-2019-1653 - Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerability -
Action Due May 03, 2022 Target Vendor : Cisco
Description :Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers contain improper access controls for URLs. Exploitation could allow an attacker to download the router configuration or detailed diagnostic information.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2019-1653
9.3
CVE-2021-31956 - Microsoft Windows NTFS Privilege Escalation Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Microsoft
Description :Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-31956
9.0
CVE-2021-28663 - Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Arm
Description :Arm Mali Graphics Processing Unit (GPU) kernel driver contains a use-after-free vulnerability that may allow a non-privileged user to make improper operations on GPU memory to gain root privilege, and/or disclose information.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-28663
9.0
CVE-2021-28664 - Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Arm
Description :Arm Mali Graphics Processing Unit (GPU) kernel driver contains an unspecified vulnerability that may allow a non-privileged user to gain write access to read-only memory, gain root privilege, corrupt memory, and modify the memory of other processes.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-28664
9.8
CVE-2021-20090 - Arcadyan Buffalo Firmware Path Traversal Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Arcadyan
Description :Arcadyan Buffalo firmware contains a path traversal vulnerability that could allow unauthenticated, remote attackers to bypass authentication and access sensitive information. This vulnerability affects multiple routers across several different vendors.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-20090
8.8
CVE-2021-30661 - Apple Multiple Products WebKit Storage Use-After-Free Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Apple
Description :Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit Storage contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-30661
9.8
CVE-2021-1871 - Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Apple
Description :Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-1871
7.8
CVE-2021-33771 - Microsoft Windows Kernel Privilege Escalation Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Microsoft
Description :Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-33771
9.8
CVE-2021-1870 - Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability -
Action Due Nov 17, 2021 Target Vendor : Apple
Description :Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Action :Apply updates per vendor instructions.
Known To Be Used in Ransomware Campaigns? : Unknown
Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-1870