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.

    6.1

    MEDIUM
    CVE-2021-1879 - Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS) Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple iOS, iPadOS, and watchOS WebKit contain an unspecified vulnerability that allows for universal cross-site scripting (XSS) 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-2021-1879

    Alert Date: Nov 03, 2021 | 1626 days ago

    7.0

    HIGH
    CVE-2021-1782 - Apple Multiple Products Race Condition Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple iOS, iPadOs, macOS, watchOS, and tvOS contain a race condition vulnerability that may allow a malicious application to elevate privileges.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-1782

    Alert Date: Nov 03, 2021 | 1626 days ago

    8.8

    HIGH
    CVE-2021-30666 - Apple iOS WebKit Buffer Overflow Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple iOS WebKit contains a buffer-overflow 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-2021-30666

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.0

    HIGH
    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

    Alert Date: Nov 03, 2021 | 1626 days ago

    7.8

    HIGH
    CVE-2021-30713 - Apple macOS Unspecified Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple macOS Transparency, Consent, and Control (TCC) contains an unspecified permissions issue which may allow a malicious application to bypass privacy preferences.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-30713

    Alert Date: Nov 03, 2021 | 1626 days ago

    10.0

    CRITICAL
    CVE-2019-11510 - Ivanti Pulse Connect Secure Arbitrary File Read Vulnerability -

    Action Due May 03, 2022 Target Vendor : Ivanti

    Description :Ivanti Pulse Connect Secure contains an arbitrary file read vulnerability that allows an unauthenticated remote attacker with network access via HTTPS to send a specially crafted URI.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known Detected Nov 03, 2021

    Notes :Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2019-11510

    Alert Date: Nov 03, 2021 | 1626 days ago

    5.5

    MEDIUM
    CVE-2021-30657 - Apple macOS Unspecified Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple macOS contains an unspecified logic issue in System Preferences that may allow a malicious application to bypass Gatekeeper checks.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-30657

    Alert Date: Nov 03, 2021 | 1626 days ago

    8.8

    HIGH
    CVE-2021-30761 - Apple iOS WebKit Memory Corruption Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple iOS WebKit contains a memory corruption 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-2021-30761

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.3

    HIGH
    CVE-2021-30869 - Apple iOS, iPadOS, and macOS Type Confusion Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Apple

    Description :Apple iOS, iPadOS, and macOS contain a type confusion vulnerability in the XNU which may allow a malicious application to execute code with kernel privileges.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2021-30869

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.0

    HIGH
    CVE-2019-3398 - Atlassian Confluence Server and Data Center Path Traversal Vulnerability -

    Action Due May 03, 2022 Target Vendor : Atlassian

    Description :Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2019-3398

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.8

    CRITICAL
    CVE-2019-11580 - Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability -

    Action Due May 03, 2022 Target Vendor : Atlassian

    Description :Atlassian Crowd and Crowd Data Center contain a remote code execution vulnerability resulting from a pdkinstall development plugin being incorrectly enabled in release builds.

    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-2019-11580

    Alert Date: Nov 03, 2021 | 1626 days ago

    10.0

    HIGH
    CVE-2019-3396 - Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability -

    Action Due May 03, 2022 Target Vendor : Atlassian

    Description :Atlassian Confluence Server and Data Center contain a server-side template injection vulnerability that may allow an attacker to achieve path traversal and 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-2019-3396

    Alert Date: Nov 03, 2021 | 1626 days ago

    6.1

    MEDIUM
    CVE-2020-3580 - Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability -

    Action Due May 03, 2022 Target Vendor : Cisco

    Description :Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an insufficient input validation vulnerability for user-supplied input by the web services interface. Successful exploitation could allow an attacker to perform cross-site scripting (XSS) in the context of the interface or access sensitive browser-based information.

    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-2020-3580

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.8

    CRITICAL
    CVE-2021-42258 - BQE BillQuick Web Suite SQL Injection Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : BQE

    Description :BQE BillQuick Web Suite contains an SQL injection vulnerability when accessing the username parameter that may allow for unauthenticated, 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-2021-42258

    Alert Date: Nov 03, 2021 | 1626 days ago

    9.8

    CRITICAL
    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

    Alert Date: Nov 03, 2021 | 1626 days ago

    7.8

    HIGH
    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

    Alert Date: Nov 03, 2021 | 1626 days ago

    7.5

    HIGH
    CVE-2020-3452 - Cisco ASA and FTD Read-Only Path Traversal Vulnerability -

    Action Due May 03, 2022 Target Vendor : Cisco

    Description :Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-3452

    Alert Date: Nov 03, 2021 | 1626 days ago

    8.8

    HIGH
    CVE-2020-8467 - Trend Micro Apex One and OfficeScan Remote Code Execution Vulnerability -

    Action Due May 03, 2022 Target Vendor : Trend Micro

    Description :Trend Micro Apex One and OfficeScan contain an unspecified vulnerability within a migration tool component that allows for remote code execution.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-8467

    Alert Date: Nov 03, 2021 | 1626 days ago

    10.0

    HIGH
    CVE-2020-3161 - Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability -

    Action Due May 03, 2022 Target Vendor : Cisco

    Description :Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an attacker to execute code remotely with root privileges or cause a denial-of-service (DoS) condition.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-3161

    Alert Date: Nov 03, 2021 | 1626 days ago

    6.5

    MEDIUM
    CVE-2020-8195 - Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability -

    Action Due May 03, 2022 Target Vendor : Citrix

    Description :Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an information disclosure vulnerability.

    Action :Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes :https://nvd.nist.gov/vuln/detail/CVE-2020-8195

    Alert Date: Nov 03, 2021 | 1626 days ago
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