CVE-2025-20333
Sept. 26, 2025, 2:08 p.m.
9.9
Critical
Description
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.
This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Cisco |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| o | cisco | adaptive_security_appliance_software | / | / | / | / | / | / | / | / |
| a | cisco | firepower_threat_defense | / | / | / | / | / | / | / | / |
| a | cisco | firepower_threat_defense | / | / | / | / | / | / | / | / |
| a | cisco | firepower_threat_defense | / | / | / | / | / | / | / | / |
| a | cisco | firepower_threat_defense | 7.6.0 | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: LOW
- Scope: CHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: HIGH
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Timeline
Published: Sept. 25, 2025, 4:15 p.m.
Last Modified: Sept. 26, 2025, 2:08 p.m.
Last Modified: Sept. 26, 2025, 2:08 p.m.
Status : Analyzed
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
psirt@cisco.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.