CVE-2026-20014
Last modified
CVE-2026-20014 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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, < 9.22.2.9 |
| Cisco | Adaptive Security Appliance Software | >= 9.23.1, < 9.23.1.13 |
| Cisco | Secure Firewall Threat Defense | >= 6.4.0, < 7.0.9 |
| Cisco | Secure Firewall Threat Defense | >= 7.1.0, < 7.2.11 |
| Cisco | Secure Firewall Threat Defense | >= 7.3.0, < 7.4.3 |
| Cisco | Secure Firewall Threat Defense | >= 7.6.0, < 7.6.4 |
| Cisco | Secure Firewall Threat Defense | >= 7.7.0, < 7.7.11 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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