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Cisco has released security updates to address vulnerabilities in Cisco products. An attacker could exploit some of these vulnerabilities to take control of an affected system.

CERT Bulgaria encourages users and administrators to review the following Cisco Advisories and apply the necessary updates. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page.

• Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution Vulnerabilities cisco-sa-rv160-260-rce-XZeFkNHf
• Sudo Privilege Escalation Vulnerability Affecting Cisco Products: January 2021 cisco-sa-sudo-privesc-jan2021-qnYQfcM
• Cisco IOS XR Software IPv6 Flood Denial of Service Vulnerability cisco-sa-xripv6-spJem78K
• Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File Write Vulnerabilities cisco-sa-rv160-260-filewrite-7x9mnKjn
• Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities cisco-sa-rv-overflow-ghZP68y
• Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities cisco-sa-rv-command-inject-BY4c5zd
• Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities cisco-sa-ioxr-l-zNhcGCBt
• Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Privilege Escalation Vulnerability cisco-sa-iosxr-pe-QpzCAePe
• Cisco IOS XR Software Enf Broker Denial of Service Vulnerability cisco-sa-iosxr-dos-WwDdghs2

• https://tools.cisco.com/security/center/publicationListing.x

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-rce-XZeFkNHf

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xripv6-spJem78K

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-filewrite-7x9mnKjn

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-ghZP68yj

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-command-inject-BY4c5zd

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBt

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pe-QpzCAePe

  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dos-WwDdghs2