CVE-2026-20106
MEDIUM EPSS 23.4%
Published Mar 4, 20263mo ago · Modified Apr 16, 20262mo ago
5.3 CVSS 3.1
Published Mar 4, 2026 3mo ago
Last Modified Apr 16, 2026 2mo ago
Description
A vulnerability in the Remote Access SSL VPN, HTTP management and MUS functionality, of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust device memory resulting in a denial of service (DoS) condition requiring a manual reboot. This vulnerability is due to trusting user input without validation. An attacker could exploit this vulnerability by sending crafted packets to the Remote Access SSL VPN server. A successful exploit could allow the attacker to cause the device to stop responding, resulting in a DoS condition.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low
Threat Intelligence
EPSS Exploit Probability
23.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-401
Affected Products 10
| Vendor | Product | Version | Range |
|---|---|---|---|
| cisco | adaptive_security_appliance_software | * | ≥9.12.1 – <9.16.4.85 |
| cisco | adaptive_security_appliance_software | * | ≥9.17.1 – <9.18.4.66 |
| cisco | adaptive_security_appliance_software | * | ≥9.19.1 – <9.20.4 |
| cisco | adaptive_security_appliance_software | * | ≥9.22.1.1 – <9.22.2.4 |
| cisco | adaptive_security_appliance_software | * | ≥9.23.1 – <9.23.1.7 |
| cisco | firepower_threat_defense_software | * | ≥6.4.0 – <7.0.9 |
| cisco | firepower_threat_defense_software | * | ≥7.1.0 – <7.2.11 |
| cisco | firepower_threat_defense_software | * | ≥7.3.0 – <7.4.3 |
| cisco | firepower_threat_defense_software | * | ≥7.6.0 – <7.6.4 |
| cisco | firepower_threat_defense_software | * | ≥7.7.0 – <7.7.11 |
References 1
- sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-m9sx6MbC
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.