CVE-2026-20349— Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 资源管理错误漏洞
一分钟漏洞结论
影响对象
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
利用判断
已确认在野利用，应立即处置
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software是美国Cisco公司的一款网络安全防火墙软件。 Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.1至9.20.4.46版本和Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0至10.0.2版本存在资源管理错误漏洞，该漏洞源于处
已观察到在野利用
cisa_kev · confirmed
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 193
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.16.1 |
affected |
9.16.1.28 |
affected | ||
9.16.2 |
affected | ||
9.16.2.3 |
affected | ||
9.16.2.7 |
affected | ||
9.16.2.11 |
affected | ||
9.16.2.13 |
affected | ||
9.16.2.14 |
affected | ||
| … +124 条更多 | |||
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0 |
affected |
7.0.0.1 |
affected | ||
7.0.1 |
affected | ||
7.0.1.1 |
affected | ||
7.0.2 |
affected | ||
7.2.0 |
affected | ||
7.0.2.1 |
affected | ||
7.0.3 |
affected | ||
| … +53 条更多 | |||
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一、 漏洞 CVE-2026-20349 基础信息
漏洞信息
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Vulnerability Title
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to insufficient error checking when processing HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the Remote Access SSL VPN service on an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
在释放前清理堆内存不恰当(堆检查)
来源: CVE Program / CVE List V5
Vulnerability Title
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software是美国Cisco公司的一款网络安全防火墙软件。 Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.1至9.20.4.46版本和Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0至10.0.2版本存在资源管理错误漏洞，该漏洞源于处
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.16.1 | - |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.0.0 | - |
|
二、漏洞 CVE-2026-20349 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
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CVE-2026-20349 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-20349
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