CVE-2026-20015
5.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Summary
A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may impact the availability of services to devices elsewhere in the network. This vulnerability is due to a memory leak when parsing IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to be manually reloaded.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.1 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.1.3 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.2 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.2.5 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.2.7 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.2.8 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3.39 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3.46 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3.53 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3.55 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.3.56 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.5 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.8 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.22 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.24 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.29 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.34 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.40 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.47 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.50 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.52 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.53 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.4.57 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.5 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.9 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.12 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.18 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.22 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.24 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.27 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.28 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.31 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.37 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.38 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.19.1.42 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.1 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.1.5 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.2 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.2.10 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.2.21 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.2.22 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.4 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.7 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.9 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.10 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.13 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.20.3.16 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.22.1.1 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.22.1.3 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.22.1.2 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.22.1.6 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.22.2 | affected |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.23.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.4 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.4.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.6 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.7 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.5.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.8 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.8.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.9 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.10 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.10.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.3.1.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.1.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.3 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.4.2.4 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.0 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.2 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.2.1 | affected |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.7.0 | affected |
Weaknesses
- CWE-401: Missing Release of Memory after Effective Lifetime
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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