CVE-2026-9105— Authenticated Stack-Based Buffer Overflow in TP-Link TL-WR841N Web Interface
Possible ATT&CK Techniques 2AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR841N v14 | < V14_260518 | affected |
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I. Basic Information for CVE-2026-9105
Vulnerability Information
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Vulnerability Title
Authenticated Stack-Based Buffer Overflow in TP-Link TL-WR841N Web Interface
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14. A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process. Successful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link TL-WR841N v14 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link TL-WR841N v14是中国TP-Link公司的一款无线路由器。 TP-Link TL-WR841N v14版本存在缓冲区错误漏洞，该漏洞源于Web管理界面中存在栈缓冲区溢出，可能导致远程认证攻击者通过发送特制HTTP请求使嵌入式Web服务器溢出栈缓冲区，导致进程崩溃，成功利用可造成拒绝服务，使设备崩溃并自动重启。
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 |
|---|---|---|---|---|
| TP-Link Systems Inc. | TL-WR841N v14 | 0 ~ V14_260518 | - |
II. Public POCs for CVE-2026-9105
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-9105 (1)
Vendor Pages for CVE-2026-9105 (2)
IV. Related Vulnerabilities
Same vendor: TP-Link Systems Inc.
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Sensitive Data Exposure due to Hardcoded Cryptographic Keys - CVE-2025-30238
Privilege Escalation via Improper Authorization in User Mana
Same weakness: CWE-121
- CVE-2026-19959
Edimax EW-7478APC formWanTcpipSetup stack-based overflow - CVE-2026-19933
DefaultFuction Customer-Relationship-Management-In-C-Project - CVE-2026-19847
TOTOLINK A800R wps.so cstecgi.cgi setWiFiWpsConfig stack-bas - CVE-2026-19846
TOTOLINK A800R firewall.so cstecgi.cgi setUrlFilterRules sta - CVE-2026-19845
TOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig stack-
V. Comments for CVE-2026-9105
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