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CVE-2026-20015

Affected software2 products, listed below
Severity5.8 Medium CVSS 3.1
WeaknessCWE-401
Published4 Mar 2026
Updated11 Aug 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.35% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached
Finding This CVE names only products the Waratek agent cannot be installed into (cisco/secure_firewall_threat_defense). They ship as sealed appliance images or as native code with no application JVM, so there is no start-up line to add -javaagent to. The vulnerability may well be a Java one; it is permanently out of ARMR's reach rather than outside its subject.

Affected software and releases

Products and versions

2 products, 8 version entries
SourceVendorProductSchemeAffected versions
nvd cisco adaptive security appliance software generic ≥ 9.18.1 and < 9.18.4.71 · ≥ 9.19.1 and < 9.20.4.10 · ≥ 9.22.1.1 and < 9.22.2.13 · ≥ 9.23.1 and < 9.23.1.19
nvd cisco secure firewall threat defense generic ≥ 7.2.0 and < 7.2.11 · ≥ 7.3.0 and < 7.4.3 · ≥ 7.6.0 and < 7.6.4 · ≥ 7.7.0 and < 7.7.11

References

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

Timeline

Published2026-03-04By the CVE Program.
NVD record modified2026-08-11NVD's own last-modified date for this record.