Vulnerability · Published Mar 4, 2026 · Assigned by cisco
CVE-2026-20014
High 7.7
In plain English
A high-severity memory leak in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official description
A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, remote attacker with valid VPN user credentials to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network. This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted, authenticated IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust memory, causing the device to reload.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.19.18.1.39.18.29.18.2.59.18.2.79.18.2.89.18.39.18.3.39 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.07.2.0.17.2.17.2.27.2.37.2.47.2.4.17.2.5 |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H