CVE-2026-7218— Totolink N300RT libapmib.so formWsc is_cmd_string_valid buffer overflow
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I. Basic Information for CVE-2026-7218
Vulnerability Information
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Vulnerability Title
Totolink N300RT libapmib.so formWsc is_cmd_string_valid buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Totolink N300RT 3.4.0-B20250430. The impacted element is the function is_cmd_string_valid of the file /boafrm/formWsc of the component libapmib.so. Performing a manipulation of the argument localPin results in buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TOTOLINK N300RT 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK N300RT是中国吉翁电子（TOTOLINK）公司的一款符合 802.11n 标准的无线路由器。 TOTOLINK N300RT 3.4.0-B20250430版本存在缓冲区错误漏洞，该漏洞源于libapmib.so组件中/boafrm/formWsc文件的is_cmd_string_valid函数的localPin参数存在缓冲区溢出，可能导致远程攻击。
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
II. Public POCs for CVE-2026-7218
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- CVE-2026-7218 | Totolink N300RT 3.4.0-B20250430 libapmib.so /boafrm/formWsc is_cmd_string_valid localPin buffer overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7218
Same Patch Batch · Totolink · 2026-04-28 · 9 CVEs total
| CVE-2026-7203 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setUrlFilterRules os command injection |
| CVE-2026-7204 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setPptpServerCfg os command injection |
| CVE-2026-7240 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setVpnAccountCfg os command injection |
| CVE-2026-7241 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setWiFiBasicCfg os command injection |
| CVE-2026-7242 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setOpenVpnClientCfg os command injection |
| CVE-2026-7243 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setRadvdCfg os command injection |
| CVE-2026-7244 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os command injection |
| CVE-2026-7219 | 7.2 HIGH | Totolink N300RT formIpQoS buffer overflow |
IV. Related Vulnerabilities
Same vendor: Totolink
- CVE-2026-8137
Totolink X5000R formDdns sub_458E40 buffer overflow - CVE-2026-7823
Totolink A8000RU cstecgi.cgi setAppFilterCfg os command inje - CVE-2026-7750
Totolink N300RH POST Request cstecgi.cgi setMacFilterRules b - CVE-2026-7749
Totolink N300RH POST Request cstecgi.cgi setWanConfig buffer - CVE-2026-7748
Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer
Same weakness: CWE-120
- CVE-2026-8260
D-Link DCS-935L HNAP Service hnap_service SetDeviceSettings - CVE-2026-8137
Totolink X5000R formDdns sub_458E40 buffer overflow - CVE-2026-6691
MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow - CVE-2026-7857
D-Link DI-8100 CGI user_group.asp sprintf buffer overflow - CVE-2026-7856
D-Link DI-8100 Web Management url_member.asp buffer overflow
V. Comments for CVE-2026-7218
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