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CVE-2026-112352— Sunhillo SureLine Authentication Bypass via Session Cookie

Quick assessment

Affected
Sunhillo Corporation SureLine
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sunhillo SureLine 9.1.5 之前的版本存在一个身份验证绕过漏洞。该漏洞允许未认证的远程攻击者通过伪造仅包含明文用户名（不含随机标识符或完整性保护）的会话 Cookie，来冒充任何拥有活跃 Web 会话的用户。攻击者可猜测默认账户名称（如 Admin 或 sftp_user），并提交伪造的用户名 Cookie，从而绕过 libwebcmn.so 中的 checkLogin 函数以及 networkDiag.cgi 中的登录检查，进而链式利用实现以 root 权限执行命令。

CVSS 9.1 · Critical
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I. Basic Information for CVE-2026-112352

Vulnerability Information
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Vulnerability Title
Sunhillo SureLine Authentication Bypass via Session Cookie
Source: CVE Program / CVE List V5
Vulnerability Description
Sunhillo SureLine before 9.1.5 contains an authentication bypass vulnerability that allows an unauthenticated remote attacker to impersonate any user with an active web session by forging a session cookie containing only a cleartext username with no random identifier or integrity protection. Attackers can guess default account names such as Admin or sftp_user and submit a forged username cookie to satisfy the login check in checkLogin (libwebcmn.so) and networkDiag.cgi, chaining into root command execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sunhillo Corporation SureLine 8.0.0 ~ 9.1.5 -

II. Public POCs for CVE-2026-112352

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III. Intelligence Information for CVE-2026-112352

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Other References for CVE-2026-112352 (2)

Same Patch Batch · Sunhillo Corporation · 2026-10-27 · 3 CVEs total

CVE-2026-112351 8.8 HIGH Sunhillo SureLine OS Command Injection via networkDiag.cgi
CVE-2026-112350 7.5 HIGH Sunhillo SureLine Path Traversal via radarUpdater.cgi

IV. Related Vulnerabilities

Same product: SureLine
Same vendor: Sunhillo Corporation
Same weakness: CWE-565