Horizon Alert
Summary of the vulnerability and why it matters
This Cisco Catalyst SD-WAN Software issue could let an attacker view sensitive system information without prior authentication. It stems from weak file system protections, allowing someone with netadmin privileges to access the vshell and potentially read operating system data.
- Sensitive information disclosure risk.
- Affects Cisco Catalyst SD-WAN Manager.
- Requires existing administrative access.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this by gaining administrative access to the Cisco Catalyst SD-WAN Manager and then accessing the vshell. From there, they can read sensitive files containing system or configuration data from the underlying operating system.
- Requires authenticated netadmin access.
- Targets the vshell.
- Reads sensitive OS files.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability, allowing unauthenticated remote attackers to view sensitive information, is actively targeted. The presence on the Known Exploited Vulnerabilities catalog suggests that attackers have already begun weaponizing it. Given the nature of the exploit, which requires administrative privileges, it is likely being used in targeted attacks to gather intelligence for further compromise.
- KEV listed, active exploitation.
- Published relatively recently.
- Exploits authenticated, privileged access.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Focus on identifying and blocking malicious traffic targeting Cisco Catalyst SD-WAN Manager, as this vulnerability is actively exploited. Prioritize isolating affected systems if patching is not immediately feasible to prevent further sensitive data exposure.
- Block network traffic from unauthenticated sources.
- Isolate systems or apply vendor patches.
- Monitor for unauthorized access attempts.
