CVE-2026-20015
Reported by cisco · Published March 4, 2026
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.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.1, 9.18.1.3, 9.18.2 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0, 7.2.0.1, 7.2.1 |
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.18.1, 9.18.1.3, 9.18.2 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.2.0, 7.2.0.1, 7.2.1 |
Timeline
- Mar 4, 2026 CVE Published
- Mar 4, 2026 CVE Updated
- Mar 5, 2026 EPSS Score (30 in total, the first dated here)
- Mar 5, 2026 PoC Published (2 in total, the first dated here)
- Mar 17, 2026 Security Advisory (3 in total, the first dated here)
- Mar 25, 2026 Coalition ESS Score (2 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-20015
vulnetix vdb fixes CVE-2026-20015Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-20015/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart