8.6
CVE-2026-20039
- EPSS 0.36%
- Veröffentlicht 04.03.2026 17:17:49
- Zuletzt bearbeitet 11.08.2026 19:40:47
- Erkennungen
Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL VPN Authentication Denial of Service Vulnerability
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 unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to ineffective memory management of the VPN web server. An attacker could exploit this vulnerability by sending a large number of crafted HTTP requests to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Adaptive Security Appliance Software Version >= 9.12.1 < 9.16.4.84
Cisco ≫ Adaptive Security Appliance Software Version >= 9.17.1 < 9.18.4.57
Cisco ≫ Adaptive Security Appliance Software Version >= 9.19.1 < 9.20.3.16
Cisco ≫ Adaptive Security Appliance Software Version >= 9.22.1.1 < 9.22.2.4
Cisco ≫ Adaptive Security Appliance Software Version >= 9.23.1 < 9.23.1.3
Cisco ≫ Secure Firewall Threat Defense Version >= 6.4.0 < 7.0.9
Cisco ≫ Secure Firewall Threat Defense Version >= 7.1.0 < 7.2.10
Cisco ≫ Secure Firewall Threat Defense Version >= 7.3.0 < 7.4.3
Cisco ≫ Secure Firewall Threat Defense Version >= 7.6.0 < 7.6.1
Cisco ≫ Secure Firewall Threat Defense Version >= 7.7.0 < 7.7.10
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. 
Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.36% | 0.275 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| Cisco PSIRT | 8.6 | 3.9 | 4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
|
CWE-244 Improper Clearing of Heap Memory Before Release ('Heap Inspection')
Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory.
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-dos-SpOFF2Re