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CVE-2026-8137— Totolink X5000R formDdns sub_458E40 buffer overflow

CVSS 8.8 · High EPSS 0.08% · P23
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I. Basic Information for CVE-2026-8137

Vulnerability Information
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Vulnerability Title
Totolink X5000R formDdns sub_458E40 buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the 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 X5000R 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK X5000R是中国吉翁电子（TOTOLINK）公司的一个路由器。 Totolink X5000R 9.1.0u.6369_B20230113版本存在缓冲区错误漏洞，该漏洞源于文件/boafrm/formDdns中函数sub_458E40的参数submit-url操作不当，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

VendorProductAffected VersionsCPESubscribe
TotolinkX5000R 9.1.0u.6369_B20230113 cpe:2.3:o:totolink:x5000r_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-8137

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III. Intelligence Information for CVE-2026-8137

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IV. Related Vulnerabilities

Same product: X5000R
Same vendor: Totolink
Same weakness: CWE-120

V. Comments for CVE-2026-8137

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