CVE-2026-20067— Cisco IOS XE和Cisco Secure Firewall Threat Defense 缓冲区错误漏洞

Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.  This vulnerability is due to incomplete error checking when parsing the Multicast DNS fields of the HTTP header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

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

跨界内存写

Cisco IOS XE和Cisco Secure Firewall Threat Defense 缓冲区错误漏洞

Cisco IOS XE和Cisco Secure Firewall Threat Defense都是美国思科（Cisco）公司的产品。Cisco IOS XE是一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。Cisco Secure Firewall Threat Defense是一个集成式防火墙平台。 Cisco IOS XE和Cisco Secure Firewall Threat Defense存在缓冲区错误漏洞，该漏洞源于

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