CVE-2026-4490— Tenda A18 Pro openSchedWifi setSchedWifi stack-based overflow
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I. Basic Information for CVE-2026-4490
Vulnerability Information
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Vulnerability Title
Tenda A18 Pro openSchedWifi setSchedWifi stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been found in Tenda A18 Pro 02.03.02.28. This issue affects the function setSchedWifi of the file /goform/openSchedWifi. This manipulation causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda A18 Pro 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda A18 Pro是中国腾达（Tenda）公司的一款无线信号扩展器。 Tenda A18 Pro 02.03.02.28版本存在安全漏洞，该漏洞源于文件/goform/openSchedWifi中函数setSchedWifi存在栈缓冲区溢出。
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
II. Public POCs for CVE-2026-4490
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- Submit #773670: Tenda A18pro V02.03.02.28 Stack-based Buffer Overflowthird-party-advisory
- CVE-2026-4490 Tenda A18 Pro openSchedWifi setSchedWifi stack-based overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-4490
Same Patch Batch · Tenda · 2026-03-20 · 5 CVEs total
| CVE-2026-4493 | 8.8 HIGH | Tenda A18 Pro MAC Filtering Configuration Endpoint setMacFilterCfg sub_423B50 stack-based |
| CVE-2026-4492 | 8.8 HIGH | Tenda A18 Pro formSetQosBand set_qosMib_list stack-based overflow |
| CVE-2026-4491 | 8.8 HIGH | Tenda A18 Pro SetIpMacBind fromSetIpMacBind stack-based overflow |
| CVE-2026-4489 | 8.8 HIGH | Tenda A18 Pro fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflow |
IV. Related Vulnerabilities
Same product: A18 Pro
Same vendor: Tenda
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Tenda AC6 httpd WifiExtraSet fromSetWirelessRepeat os comman - CVE-2026-8259
Tenda AC6 httpd telnet os command injection - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2026-4490
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