CVE-2019-1920— Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1920
Vulnerability Information
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Vulnerability Title
Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the 802.11r Fast Transition (FT) implementation for Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected interface. The vulnerability is due to a lack of complete error handling condition for client authentication requests sent to a targeted interface configured for FT. An attacker could exploit this vulnerability by sending crafted authentication request traffic to the targeted interface, causing the device to restart unexpectedly.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS Access Points Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS Access Points（APs）Software是美国思科（Cisco）公司的一套专用于Cisco无线接入点设备的软件。 Cisco IOS APs Software中802.11r Fast Transition的实现存在输入验证错误漏洞。攻击者可利用该漏洞造成设备意外重启，导致拒绝服务。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Aironet Access Point Software | unspecified ~ 8.8.100.0 | - |
II. Public POCs for CVE-2019-1920
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190717-aironet-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1920
Same Patch Batch · Cisco · 2019-07-17 · 8 CVEs total
| CVE-2019-1917 | Cisco Vision Dynamic Signage Director REST API Authentication Bypass Vulnerability | |
| CVE-2019-1919 | Cisco FindIT Network Management Software Static Credentials Vulnerability | |
| CVE-2019-1942 | Cisco Identity Services Engine Blind SQL Injection Vulnerability | |
| CVE-2019-1941 | Cisco Identity Services Engine Cross-Site Scripting Vulnerability | |
| CVE-2019-1940 | Cisco Industrial Network Director Web Services Management Agent Unauthorized Information D | |
| CVE-2019-1923 | Cisco Small Business SPA500 Series IP Phones Local Command Execution Vulnerability | |
| CVE-2019-1943 | Cisco Small Business Series Switches Open Redirect Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco Aironet Access Point Software
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-20
V. Comments for CVE-2019-1920
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