CVE-2026-20013

MEDIUM EPSS 21.9%
Published Mar 4, 20263mo ago · Modified Apr 16, 20262mo ago
5.8 CVSS 3.1
Medium
Find Similar
Published Mar 4, 2026 3mo ago
Last Modified Apr 16, 2026 2mo ago

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 Details

Base Score
5.8
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
21.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-401

Affected Products 8

VendorProductVersionRange
ciscoadaptive_security_appliance_software*≥9.18.1  –  <9.18.4.66
ciscoadaptive_security_appliance_software*≥9.19.1  –  <9.20.3.20
ciscoadaptive_security_appliance_software*≥9.22.1.1  –  <9.22.2.4
ciscoadaptive_security_appliance_software*≥9.23.1  –  <9.23.1.3
ciscofirepower_threat_defense_software*≥7.2.0  –  <7.2.11
ciscofirepower_threat_defense_software*≥7.3.0  –  <7.4.3
ciscofirepower_threat_defense_software*≥7.6.0  –  <7.6.4
ciscofirepower_threat_defense_software*≥7.7.0  –  <7.7.10

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.