Cisco SD-WAN Solution Privilege Escalation Vulnerability

Vulnerability

A privilege escalation vulnerability exists in the CLI of Cisco SD-WAN Solution software. The issue stems from insufficient authorization enforcement, allowing an authenticated local attacker to execute commands that bypass normal privilege checks. Affected versions include Cisco SD-WAN vEdge routers and vManage, vSmart, and vBond controllers running software releases prior to the fixed versions listed in the Cisco advisory [1].

Exploitation

An attacker must have local access to the affected device and valid authentication credentials (e.g., a low-privileged user account). The attacker then issues specific CLI commands that exploit the missing authorization checks, leading to elevated privileges. No user interaction beyond the attacker's own actions is required [1].

Impact

Successful exploitation grants the attacker root-level privileges on the device. With root access, the attacker can make arbitrary configuration changes, read sensitive data, disrupt operations, or potentially pivot to other parts of the network. The compromise is complete within the scope of the affected device [1].

Mitigation

Cisco has released free software updates to address this vulnerability. Customers should upgrade to the fixed software versions specified in the Cisco Security Advisory [1]. No workarounds are available; upgrading is the only mitigation. The vulnerability is not listed on the CISA Known Exploited Vulnerabilities (KEV) catalog as of the publication date.