Cisco Issues Patches for Three Critical Vulnerabilities in IOS XE Software
On September 24, 2021, Cisco Systems announced the release of patches to address three critical security vulnerabilities in its IOS XE network operating system. These flaws could allow remote attackers to execute arbitrary code with administrative privileges and potentially trigger a denial-of-service (DoS) condition on affected devices. The identified vulnerabilities are as follows:
- CVE-2021-34770 (CVSS score: 10.0) – Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
- CVE-2021-34727 (CVSS score: 9.8) – Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
- CVE-2021-1619 (CVSS score: 9.8) – Cisco IOS XE Software NETCONF and RESTCONF Authentication Bypass Vulnerability
The most critical issue, CVE-2021-34770, is described by Cisco as a “logic error” occurring during the processing of CAPWAP (Control and Provisioning of Wireless Access Points) packets, which allows a central wireless controller to manage access points.
Cisco Issues Critical Security Patches for IOS XE Software Vulnerabilities On September 24, 2021, Cisco Systems announced the release of critical patches addressing three significant security vulnerabilities within its IOS XE network operating system. These vulnerabilities could allow remote attackers to execute arbitrary code with administrative privileges and potentially initiate…
Cisco Issues Patches for Three Critical Vulnerabilities in IOS XE Software
On September 24, 2021, Cisco Systems announced the release of patches to address three critical security vulnerabilities in its IOS XE network operating system. These flaws could allow remote attackers to execute arbitrary code with administrative privileges and potentially trigger a denial-of-service (DoS) condition on affected devices. The identified vulnerabilities are as follows:
- CVE-2021-34770 (CVSS score: 10.0) – Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
- CVE-2021-34727 (CVSS score: 9.8) – Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
- CVE-2021-1619 (CVSS score: 9.8) – Cisco IOS XE Software NETCONF and RESTCONF Authentication Bypass Vulnerability
The most critical issue, CVE-2021-34770, is described by Cisco as a “logic error” occurring during the processing of CAPWAP (Control and Provisioning of Wireless Access Points) packets, which allows a central wireless controller to manage access points.