Cisco IOS
At a glance
- Source
- NVD
- EPSS
- EPSS 0.36 % · percentile 30 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
Description
A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit of Cisco IOS Software and IOS XE Software could allow the attacker to cause the affected device to reload, resulting in a DoS condition. A successful exploit of Cisco Secure Firewall ASA Software and Secure FTD Software could allow the attacker to partially exhaust system memory, resulting in system instability, such as the inability to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
Weaknesses (CWE)
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-15428
- GCVE · GCVE-0-2026-20012
CERT-FR advisories
- CERTFR-2026-AVI-0361 — Multiples vulnérabilités dans Cisco IOS et IOS XE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.5:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.6:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.7:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.8:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.9:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.10:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.11:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.12:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.13:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.14:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.15:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.16:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.17:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.18:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.5:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.6:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.7:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.8:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.9:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.10:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.11:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.12:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.13:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.14:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.15:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.16:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.17:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.18:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0.1:*:*:*:*:*:*:*- +1231 more
Affected products
| Product | Versions |
|---|---|
| Cisco · IOS | affected 15.2(1)S ; affected 15.2(2)S ; affected 15.2(1)S1 ; affected 15.2(4)S ; affected 15.2(1)S2 ; affected 15.2(2)S1 |
| Cisco · Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | affected 9.8.1 ; affected 9.8.1.5 ; affected 9.8.1.7 ; affected 9.8.2 ; affected 9.8.2.8 ; affected 9.8.2.14 |
| Cisco · Cisco IOS XE Software | affected 3.5.0E ; affected 3.5.1E ; affected 3.5.2E ; affected 3.5.3E ; affected 3.11.1S ; affected 3.11.2S |
| Cisco · Cisco Secure Firewall Threat Defense (FTD) Software | affected 6.2.3 ; affected 6.2.3.1 ; affected 6.2.3.2 ; affected 6.2.3.3 ; affected 6.2.3.4 ; affected 6.2.3.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |