CVE-2025-20140
Quick assessment
Affected
Cisco Cisco IOS XE Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cisco IOS XE是美国思科（Cisco）公司的一个操作系统。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 IOS XE存在安全漏洞，该漏洞源于内存管理不当，可能导致拒绝服务攻击。
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2025-20140
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition.
This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE是美国思科（Cisco）公司的一个操作系统。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 IOS XE存在安全漏洞，该漏洞源于内存管理不当，可能导致拒绝服务攻击。
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 IOS XE Software | 16.4.1 | - |
|
II. Public POCs for CVE-2025-20140
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-20140
请登录查看更多情报信息。
Vendor Advisories for CVE-2025-20140 (1)
Same Patch Batch · Cisco · 2025-05-07 · 35 CVEs total
| CVE-2025-20188 | 10.0 CRITICAL | Cisco IOS XE 信任管理问题漏洞 |
| CVE-2025-20186 | 8.8 HIGH | Cisco IOS XE 操作系统命令注入漏洞 |
| CVE-2025-20154 | 8.6 HIGH | Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability |
| CVE-2025-20182 | 8.6 HIGH | Cisco Adaptive Security Appliance Software, Firepower Threat Defense Software and IOS XE S |
| CVE-2025-20162 | 8.6 HIGH | Cisco IOS XE 资源管理错误漏洞 |
| CVE-2025-20164 | 8.3 HIGH | Cisco IOS 安全漏洞 |
| CVE-2025-20122 | 7.8 HIGH | Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability |
| CVE-2025-20192 | 7.7 HIGH | Cisco IOS XE 安全漏洞 |
| CVE-2025-20202 | 7.4 HIGH | Cisco IOS XE Wireless Controller Software 安全漏洞 |
| CVE-2025-20191 | 7.4 HIGH | Multiple Cisco Products Denial of Service Vulnerability |
| CVE-2025-20189 | 7.4 HIGH | Cisco IOS XE 安全漏洞 |
| CVE-2025-20210 | 7.3 HIGH | Cisco Catalyst Center Unprotected API Endpoint |
| CVE-2025-20197 | 6.7 MEDIUM | Cisco IOS XE 输入验证错误漏洞 |
| CVE-2025-20200 | 6.7 MEDIUM | Cisco IOS XE 代码问题漏洞 |
| CVE-2025-20201 | 6.7 MEDIUM | Cisco IOS XE 代码问题漏洞 |
| CVE-2025-20187 | 6.5 MEDIUM | Cisco SD-WAN Manager Software Arbitrary File Creation Vulnerability |
| CVE-2025-20190 | 6.5 MEDIUM | Cisco IOS XE Wireless Controller Software 访问控制错误漏洞 |
| CVE-2025-20193 | 6.5 MEDIUM | Cisco IOS XE 操作系统命令注入漏洞 |
| CVE-2025-20155 | 6.0 MEDIUM | Cisco IOS XE 安全漏洞 |
| CVE-2025-20157 | 5.9 MEDIUM | Cisco Catalyst vManage Certificate Validation Vulnerability |
Showing top 20 of 35 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco IOS XE Software
-
CVE-2026-20311
Cisco IOS XE Software Web UI Denial of Service Vulnerability -
CVE-2026-20301
Cisco IOS Software and IOS XE Software Extensible Messaging -
CVE-2026-20308
Cisco IOS XE Software Web-Based Management Interface Vulnera -
CVE-2026-20273
Cisco IOS XE Software Security Hardening Release -
CVE-2026-20272
Cisco IOS XE Software Security Hardening Release
Same vendor: Cisco
-
CVE-2026-76519
Cisco Secure Email Gateway Arbitrary File Write Vulnerabilit -
CVE-2026-76472
Cisco Meraki Security Hardening Release October 2026 - Impro -
CVE-2026-76467
Cisco Meraki Software Hardening Release - Resource Lifetime -
CVE-2026-76470
Cisco Meraki Hardening Release - Incorrect Calculation Vulne -
CVE-2026-76469
Cisco Meraki Security Hardening Release: October 2026 Insuff
Same weakness: CWE-789
-
CVE-2026-110258
OW2 ASM 3.0 before 9.11 Excessive Memory Allocation via Mult -
CVE-2026-110257
OW2 ASM 5.0 before 9.11 Excessive Memory Allocation via Boot -
CVE-2026-85324
Active Directory Federation Services (AD FS) Denial of Servi -
CVE-2026-109149
beautifier js-beautify memory allocation -
CVE-2020-37280
cbor-sync through 1.0.4 Memory Exhaustion via Unchecked CBOR
V. Comments for CVE-2025-20140
No comments yet