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 1 - 20 of 27
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Zyxel | DSL CPE Devices

CVE-2024-40891

Zyxel DSL CPE OS Command Injection Vulnerability: Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the management commands that could allow an authenticated attacker to execute OS commands via Telnet.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.
  • Date Added: 2025-02-11
  • Due Date: 2025-03-04
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025 ; https://www.zyxel.com/service-provider/global/en/security-advisories/zyxel-security-advisory-command-injection-insecure-in-certain-legacy-dsl-cpe-02-04-2025 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40891
Zyxel | DSL CPE Devices

CVE-2024-40890

Zyxel DSL CPE OS Command Injection Vulnerability: Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the CGI program that could allow an authenticated attacker to execute OS commands via a crafted HTTP request.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.
  • Date Added: 2025-02-11
  • Due Date: 2025-03-04
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025 ; https://www.zyxel.com/service-provider/global/en/security-advisories/zyxel-security-advisory-command-injection-insecure-in-certain-legacy-dsl-cpe-02-04-2025 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40890
Zyxel | Multiple Firewalls

CVE-2024-11667

Zyxel Multiple Firewalls Path Traversal Vulnerability: Multiple Zyxel firewalls contain a path traversal vulnerability in the web management interface that could allow an attacker to download or upload files via a crafted URL.

Related CWE: CWE-22

Known To Be Used in Ransomware Campaigns? Known

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2024-12-03
  • Due Date: 2024-12-24
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-21-2024 ; https://nvd.nist.gov/vuln/detail/CVE-2024-11667
Atlassian | Jira Server and Data Center

CVE-2021-26086

Atlassian Jira Server and Data Center Path Traversal Vulnerability: Atlassian Jira Server and Data Center contain a path traversal vulnerability that allows a remote attacker to read particular files in the /WEB-INF/web.xml endpoint.

Related CWE: CWE-22

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2024-11-12
  • Due Date: 2024-12-03
Additional Notes
https://jira.atlassian.com/browse/JRASERVER-72695 ; https://nvd.nist.gov/vuln/detail/CVE-2021-26086
Atlassian | Confluence Data Center and Server

CVE-2023-22527

Atlassian Confluence Data Center and Server Template Injection Vulnerability: Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.

Related CWE: CWE-74

Known To Be Used in Ransomware Campaigns? Known

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2024-01-24
  • Due Date: 2024-02-14
Additional Notes
https://confluence.atlassian.com/security/cve-2023-22527-rce-remote-code-execution-vulnerability-in-confluence-data-center-and-confluence-server-1333990257.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22527
Atlassian | Confluence Data Center and Server

CVE-2023-22518

Atlassian Confluence Data Center and Server Improper Authorization Vulnerability: Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

Related CWE: CWE-863

Known To Be Used in Ransomware Campaigns? Known

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2023-11-07
  • Due Date: 2023-11-28
Additional Notes
https://confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22518
Atlassian | Confluence Data Center and Server

CVE-2023-22515

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability: Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

Known To Be Used in Ransomware Campaigns? Known

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
  • Date Added: 2023-10-05
  • Due Date: 2023-10-13
Additional Notes
https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22515
Zyxel | EMG2926 Routers

CVE-2017-6884

Zyxel EMG2926 Routers Command Injection Vulnerability: Zyxel EMG2926 routers contain a command injection vulnerability located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute malicious commands on the router, such as the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Known

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2023-09-18
  • Due Date: 2023-10-09
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-emg2926-q10a-ethernet-cpe, https://www.zyxelguard.com/Zyxel-EOL.asp; https://nvd.nist.gov/vuln/detail/CVE-2017-6884
Zyxel | P660HN-T1A Routers

CVE-2017-18368

Zyxel P660HN-T1A Routers Command Injection Vulnerability: Zyxel P660HN-T1A routers contain a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user and exploited via the remote_host parameter of the ViewLog.asp page.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  • Date Added: 2023-08-07
  • Due Date: 2023-08-28
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-a-new-variant-of-gafgyt-malware; https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-p660hn-t1a-dsl-cpe; https://nvd.nist.gov/vuln/detail/CVE-2017-18368
Zyxel | Multiple Network-Attached Storage (NAS) Devices

CVE-2023-27992

Zyxel Multiple NAS Devices Command Injection Vulnerability: Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability that could allow an unauthenticated attacker to execute commands remotely via a crafted HTTP request.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-06-23
  • Due Date: 2023-07-14
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-products; https://nvd.nist.gov/vuln/detail/CVE-2023-27992
Zyxel | Multiple Firewalls

CVE-2023-33010

Zyxel Multiple Firewalls Buffer Overflow Vulnerability: Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.

Related CWE: CWE-120

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-06-05
  • Due Date: 2023-06-26
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-33010
Zyxel | Multiple Firewalls

CVE-2023-33009

Zyxel Multiple Firewalls Buffer Overflow Vulnerability: Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the notification function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.

Related CWE: CWE-120

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-06-05
  • Due Date: 2023-06-26
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-33009
Zyxel | Multiple Firewalls

CVE-2023-28771

Zyxel Multiple Firewalls OS Command Injection Vulnerability: Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-05-31
  • Due Date: 2023-06-21
Additional Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-28771
Telerik | User Interface (UI) for ASP.NET AJAX

CVE-2017-11357

Telerik UI for ASP.NET AJAX Insecure Direct Object Reference Vulnerability: Telerik UI for ASP.NET AJAX contains an insecure direct object reference vulnerability in RadAsyncUpload that can result in file uploads in a limited location and/or remote code execution.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2023-01-26
  • Due Date: 2023-02-16
Additional Notes
https://docs.telerik.com/devtools/aspnet-ajax/knowledge-base/asyncupload-insecure-direct-object-reference; https://nvd.nist.gov/vuln/detail/CVE-2017-11357
Atlassian | Bitbucket Server and Data Center

CVE-2022-36804

Atlassian Bitbucket Server and Data Center Command Injection Vulnerability: Multiple API endpoints of Atlassian Bitbucket Server and Data Center contain a command injection vulnerability where an attacker with access to a public Bitbucket repository, or with read permissions to a private one, can execute code by sending a malicious HTTP request.

Related CWEs: CWE-78| CWE-88| CWE-158

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-09-30
  • Due Date: 2022-10-21
Additional Notes
https://jira.atlassian.com/browse/BSERV-13438; https://nvd.nist.gov/vuln/detail/CVE-2022-36804
Atlassian | Confluence

CVE-2022-26138

Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability: Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext. A remote unauthenticated attacker can use these credentials to log into Confluence and access all content accessible to users in the confluence-users group.

Related CWE: CWE-798

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-07-29
  • Due Date: 2022-08-19
Additional Notes
https://confluence.atlassian.com/doc/questions-for-confluence-security-advisory-2022-07-20-1142446709.html; https://nvd.nist.gov/vuln/detail/CVE-2022-26138
Atlassian | Confluence Server/Data Center

CVE-2022-26134

Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability: Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.

Related CWE: CWE-917

Known To Be Used in Ransomware Campaigns? Known

Action: Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.
  • Date Added: 2022-06-02
  • Due Date: 2022-06-06
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2022-26134
Zyxel | Multiple Firewalls

CVE-2022-30525

Zyxel Multiple Firewalls OS Command Injection Vulnerability: A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-05-16
  • Due Date: 2022-06-06
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2022-30525
Telerik | User Interface (UI) for ASP.NET AJAX

CVE-2017-11317

Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability: Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Related CWE: CWE-326

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-04-11
  • Due Date: 2022-05-02
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2017-11317
Atlassian | Confluence Server

CVE-2021-26085

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability: Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint.

Related CWE: CWE-425

Known To Be Used in Ransomware Campaigns? Known

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-28
  • Due Date: 2022-04-18
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-26085

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