CVE-2026-20012

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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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

在移除最后引用时对内存的释放不恰当(内存泄露)

Cisco多款产品 安全漏洞

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 Secure Firewall Adaptive Security Appliance是一个企业级防火墙软件。Cisco IOS XE Software是一种网络操作系统。 Cisco多款产品存在安全漏洞，该漏洞源于IKEv2数据包解析不当，可能导致内存泄漏并引发拒绝服务。以下产品受到影响：Cisco IOS Software、Cisco IOS XE Software、Cisco S

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