CVE-2025-20362 Scanner

Cisco Secure Firewall ASA and FTD are advanced security software used in enterprise and service provider networks to provide comprehensive network security. They combine firewall capabilities, VPN support, and more, serving businesses of all sizes globally. The software is relied upon to protect sensitive data, enforce security policies, and support secure remote connections. Network administrators and security professionals implement these tools to manage and mitigate security risks. By ensuring secure network perimeters, they play a crucial role in maintaining the integrity and confidentiality of network communications. Regular updates and configuration reviews are part of maintaining the strength of these firewalls.

This vulnerability is an Authentication Bypass flaw that occurs in the VPN web server component of Cisco Secure Firewall ASA and FTD Software. The issue arises from improper validation of user-supplied input within HTTP(S) requests. As a result, malicious actors could potentially access restricted URL endpoints without authentication. This vulnerability could serve as a gateway for attackers to exploit further, potentially leading to unauthorized access to sensitive information. This kind of vulnerability significantly undermines the security posture of affected systems and requires immediate attention.

Technically, the vulnerable endpoint relates to the handling of crafted HTTP requests by unauthorized users. The flaw lies in the software's failure to correctly verify inputs before processing them. Attackers can exploit this by sending specifically crafted HTTP requests to affected web servers. A successful exploitation allows access to otherwise restricted URLs on the device, circumventing established security controls. Such bypassing of authentication mechanisms could have dire consequences if not promptly addressed.

If exploited, this vulnerability can lead to unauthorized access to sensitive information and functionalities that are expected to be restricted. Malicious actors could leverage this flaw to manipulate data, modify configurations, and possibly further infiltrate the network. The unauthorized access might disrupt services and impact network operations if the attackers alter critical network configurations. Organizations might face significant losses concerning data breaches, privacy violations, and compliance failures. Such violations could also tarnish an organization's reputation and erode stakeholder trust.

REFERENCES

• https://attackerkb.com/topics/Szq5u0xgUX/cve-2025-20362/rapid7-analysis
• https://nvd.nist.gov/vuln/detail/cve-2025-20362