CVE-2025-20224
published 2025-08-14CVE-2025-20224: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall…
PriorityP433medium5.8CVSS 3.1
AVNACLPRNUINSCCNINAL
EPSS
0.68%
48.5th percentile
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco 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 improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending a continuous stream of crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to partially exhaust system memory, causing system instability like being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
Affected
315 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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GHSA
GHSA-59m5-88pm-rmcf: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure F
ghsa_unreviewed·2025-08-14
CVE-2025-20224 [MEDIUM] CWE-401 GHSA-59m5-88pm-rmcf: A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure F
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco 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 improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending a continuous stream of crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to partially exhaust system memory, causing system instability like being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
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-2025-20224 [HIGH] Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
CVE-2025-20224: 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
No detection rules found.
No public exploits indexed.
2025-08-14
Published