CVE-2026-6157— Totolink A800R app.so setAppEasyWizardConfig buffer overflow
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I. Basic Information for CVE-2026-6157
Vulnerability Information
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Vulnerability Title
Totolink A800R app.so setAppEasyWizardConfig buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Totolink A800R 4.1.2cu.5137_B20200730. This impacts the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. The manipulation of the argument apcliSsid results in buffer overflow. The attack can be executed 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:L/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 A800R 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A800R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A800R 4.1.2cu.5137_B20200730版本存在安全漏洞，该漏洞源于对库文件/lib/cste_modules/app.so中参数apcliSsid的错误操作，可能导致缓冲区溢出。
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-2026-6157
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Same Patch Batch · Totolink · 2026-04-13 · 11 CVEs total
| CVE-2026-6195 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi setPasswordCfg os command injection |
| CVE-2026-6156 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection |
| CVE-2026-6155 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection |
| CVE-2026-6154 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection |
| CVE-2026-6140 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection |
| CVE-2026-6139 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi UploadOpenVpnCert os command injection |
| CVE-2026-6138 | 9.8 CRITICAL | Totolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection |
| CVE-2026-6194 | 8.8 HIGH | Totolink A3002MU HTTP Request formWlanSetup sub_410188 stack-based overflow |
| CVE-2026-6168 | 8.8 HIGH | TOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow |
| CVE-2026-6158 | 7.3 HIGH | Totolink N300RH upgrade.so setUpgradeUboot os command injection |
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-2026-6157
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