Vulnerability in Cisco Adaptive Security Appliance Software
CVE-2026-20014
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Cisco Adaptive Security Appliance Software
- Cisco Secure Firewall Adaptive Security Appliance (Asa) Software — versions 9.18.1, 9.18.1.3, 9.18.2
- Cisco Secure Firewall Threat Defense (Ftd) Software — versions 7.2.0, 7.2.0.1, 7.2.1
- Cisco Firepower Threat Defense Software
- Cisco Secure Firewall Threat Defense
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20014?
- CVE-2026-20014 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.7/10. Published 2026-03-04.
- How severe is CVE-2026-20014?
- High severity. CVSS v3 base score is 7.7 out of 10.