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 46
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Cisco | Cisco IOS XE Web UI

CVE-2023-20273

Cisco IOS XE Web UI Command Injection Vulnerability: Cisco IOS XE contains a command injection vulnerability in the web user interface. When chained with CVE-2023-20198, the attacker can leverage the new local user to elevate privilege to root and write the implant to the file system. Cisco identified CVE-2023-20273 as the vulnerability exploited to deploy the implant. CVE-2021-1435, previously associated with the exploitation events, is no longer believed to be related to this activity.

Related CWE: CWE-78

Known To Be Used in Ransomware Campaigns? Unknown

Action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.
  • Date Added: 2023-10-23
  • Due Date: 2023-10-27
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z; https://nvd.nist.gov/vuln/detail/CVE-2023-20273
Cisco | IOS XE Web UI

CVE-2023-20198

Cisco IOS XE Web UI Privilege Escalation Vulnerability: Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device.

Related CWE: CWE-420

Known To Be Used in Ransomware Campaigns? Unknown

Action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.
  • Date Added: 2023-10-16
  • Due Date: 2023-10-20
Additional Notes
https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-xe-dublin-17121/221128-software-fix-availability-for-cisco-ios.html; https://nvd.nist.gov/vuln/detail/CVE-2023-20198
Cisco | IOS and IOS XE

CVE-2023-20109

Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability: Cisco IOS and IOS XE contain an out-of-bounds write vulnerability in the Group Encrypted Transport VPN (GET VPN) feature that could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute malicious code or cause a device to crash.

Related CWE: CWE-787

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: 2023-10-10
  • Due Date: 2023-10-31
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-getvpn-rce-g8qR68sx; https://nvd.nist.gov/vuln/detail/CVE-2023-20109
Cisco | IOS, IOS XR, and IOS XE

CVE-2016-6415

Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability: Cisco IOS, IOS XR, and IOS XE contain insufficient condition checks in the part of the code that handles Internet Key Exchange version 1 (IKEv1) security negotiation requests. contains an information disclosure vulnerability in the Internet Key Exchange version 1 (IKEv1) that could allow an attacker to retrieve memory contents. Successful exploitation could allow the attacker to retrieve memory contents, which can lead to information disclosure.

Related CWE: CWE-200

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-05-19
  • Due Date: 2023-06-09
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1; https://nvd.nist.gov/vuln/detail/CVE-2016-6415
Cisco | IOS

CVE-2004-1464

Cisco IOS Denial-of-Service Vulnerability: Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device.

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-05-19
  • Due Date: 2023-06-09
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20040827-telnet; https://nvd.nist.gov/vuln/detail/CVE-2004-1464
Cisco | IOS and IOS XE Software

CVE-2017-6742

Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload.

Related CWE: CWE-119

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2023-04-19
  • Due Date: 2023-05-10
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp; https://nvd.nist.gov/vuln/detail/CVE-2017-6742
Cisco | IOS XR

CVE-2022-20821

Cisco IOS XR Open Port Vulnerability: Cisco IOS XR software health check opens TCP port 6379 by default on activation. An attacker can connect to the Redis instance on the open port and allow access to the Redis instance that is running within the NOSi container.

Related CWE: CWE-923

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-05-23
  • Due Date: 2022-06-13
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2022-20821
Cisco | IOS and IOS XE

CVE-2017-3881

Cisco IOS and IOS XE Remote Code Execution Vulnerability: A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-25
  • Due Date: 2022-04-15
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2017-3881
Cisco | IOS XR

CVE-2009-2055

Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability: Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-25
  • Due Date: 2022-04-15
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2009-2055
Cisco | IOS XR

CVE-2010-3035

Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability: Cisco IOS XR, when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-25
  • Due Date: 2022-04-15
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2010-3035
Cisco | IOS, XR, and XE Software

CVE-2018-0175

Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability: Format string vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device.

Related CWE: CWE-119

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0175
Cisco | IOS and IOS XE Software

CVE-2018-0172

Cisco IOS and IOS XE Software Improper Input Validation Vulnerability: A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow for denial-of-service (DoS).

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0172
Cisco | IOS, XR, and XE Software

CVE-2018-0167

Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability: There is a buffer overflow vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software which could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code.

Related CWE: CWE-119

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0167
Cisco | IOS Software

CVE-2018-0161

Cisco IOS Software Resource Management Errors Vulnerability: A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco Catalyst Switches could allow an authenticated, remote attacker to cause a denial-of-service (DoS) condition.

Related CWE: CWE-399

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0161
Cisco | IOS Software and Cisco IOS XE Software

CVE-2018-0159

Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability: A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial-of-service (DoS) condition.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0159
Cisco | IOS Software and Cisco IOS XE Software

CVE-2018-0158

Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability: A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial-of-service (DoS) condition.

Related CWE: CWE-20

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0158
Cisco | IOS Software and Cisco IOS XE Software

CVE-2018-0156

Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability: A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial-of-service (DoS) condition.

Related CWE: CWE-399

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0156
Cisco | IOS Software

CVE-2018-0179

Cisco IOS Software Denial-of-Service Vulnerability: A vulnerability in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition.

Related CWE: CWE-399

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0179
Cisco | IOS Software

CVE-2018-0180

Cisco IOS Software Denial-of-Service Vulnerability: A vulnerability in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition.

Related CWE: CWE-399

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-17
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0180
Cisco | IOS and IOS XE Software

CVE-2017-6743

Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code.

Related CWE: CWE-119

Known To Be Used in Ransomware Campaigns? Unknown

Action: Apply updates per vendor instructions.
  • Date Added: 2022-03-03
  • Due Date: 2022-03-24
Additional Notes
https://nvd.nist.gov/vuln/detail/CVE-2017-6743

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