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I. Basic Information for CVE-2025-20253
Vulnerability Information

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Vulnerability Title
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is due to the improper processing of 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 cause an infinite loop that exhausts resources and could cause the device to reload.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS等都是美国思科(Cisco)公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XE是一个操作系统。Cisco Secure Firewall Adaptive Security Appliance是一个企业级防火墙软件。 Cisco多款产品存在安全漏洞,该漏洞源于IKEv2数据包处理不当,可能导致拒绝服务攻击。以下产品受到影响:Cisco IOS Software、IOS XE Software、Secure Firewall ASA Software和
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
CiscoCisco Adaptive Security Appliance (ASA) Software 9.12.3 -
CiscoCisco Firepower Threat Defense Software 6.2.3.14 -
II. Public POCs for CVE-2025-20253
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III. Intelligence Information for CVE-2025-20253
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IV. Related Vulnerabilities
V. Comments for CVE-2025-20253

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