CVE-2025-20225
published 2025-08-14CVE-2025-20225: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance…
PriorityP433medium5.8CVSS 3.1
AVNACLPRNUINSCCNINAL
EPSS
0.68%
48.5th percentile
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and 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.
This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system instability such as being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
Affected
809 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
CVSS provenance
nvdv3.15.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
vendor_cisco8.6HIGH
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Cisco
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
vendor_cisco·2025-08-14·CVSS 8.6
CVE-2025-20224 [HIGH] CWE-401 Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
Multiple vulnerabilities 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 denial of service (DoS) condition.
Cisco has released software updates that address these vulnerabilities. There are workarounds that address these vulnerabilities.
For more information about these vulnerabilities, see the Details section of this advisory.
This advisory is available at the following link:https://sec.cloudapps.cisco.com/secu
Cisco
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
vendor_cisco·CVSS 3.1
CVE-2025-20225 [HIGH] Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
CVE-2025-20225: Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
Multiple vulnerabilities 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 denial of service (DoS) condition. Cisco has released software updates that address these vulnerabilities. There are
Severity: high
CVSS: 3.1
CWE: CWE-401, CWE-835, CWE-401, CWE-835
Bug IDs: CSCwn73399, CSCwn83263, CSCwo15021, CSCwn73399, CSCwn83263
GHSA
GHSA-f92v-9whh-9h2q: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appli
ghsa_unreviewed·2025-08-14
CVE-2025-20225 [MEDIUM] CWE-401 GHSA-f92v-9whh-9h2q: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appli
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA) Software, and 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.
This vulnerability is due to a lack of proper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. In the case of Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly. In the case of Cisco ASA and FTD Software, a successful exploit could allow the attacker to partially exhaust system memory, causing system in
No detection rules found.
No public exploits indexed.
2025-08-14
Published