CVE-2025-20133
BaseFortify
Publication date: 2025-08-14
Last updated on: 2025-08-15
Assigner: Cisco Systems, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| cisco | secure_ftd | * |
| cisco | secure_firewall_asa | 3.1 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-401 | The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the management and VPN web servers of the Remote Access SSL VPN feature in Cisco Secure Firewall ASA Software and Secure FTD Software. It is caused by ineffective validation of user-supplied input during the VPN authentication process. An unauthenticated, remote attacker can exploit this by sending a specially crafted request to the VPN service, which can cause the device to stop responding unexpectedly, leading to a denial-of-service (DoS) condition.
How can this vulnerability impact me? :
If exploited, this vulnerability can cause the affected device to stop responding to Remote Access SSL VPN authentication requests, resulting in a denial-of-service (DoS) condition. This means legitimate users may be unable to access the VPN service, disrupting remote access and potentially impacting business operations that rely on secure remote connectivity.