CVE Tools
Sign in

CVE-2026-20015

Published: Mar 4, 2026Updated: Apr 16, 2026 Sources: CVE List NVDCWE-401
NVD MITRE
5.8CVSSMEDIUM
EPSS Score
0.3%
Top 78.3%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-401

Affected Products

Cisco Secure Firewall Adaptive Security Appliance (ASA) SoftwareCisco
EmbeddedOS
Networking Infrastructure / firewall
Cisco Secure Firewall Threat Defense (FTD) SoftwareCisco
On-premSecurity Product
Security Products
adaptive security appliance softwarecisco
On-premNetwork Device
Networking Infrastructure / firewall
firepower threat defense softwarecisco
On-premSecurity Product
Security Products / vuln-mgmt-scanner
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG
sec.cloudapps.cisco.com

Timeline

Published
Mar 4, 2026
Last Updated
Apr 16, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-20015 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows