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CVE-2026-20013

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 also impact the availability of services to devices elsewhere in the network. This vulnerability is due to memory exhaustion caused by not freeing memory during IKEv2 packet processing. 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 manually reload.

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
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Weaknesses

CWE-401

Affected Products

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

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