Vulnerability Intelligence Report
Sunhillo SureLine Authentication Bypass via Session Cookie
CVE-2026-112352
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.
No Active Exploit Signals
CVSS Base Score
9.1
CRITICAL
EPSS Probability:1.32%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-565 ↗Reliance on Cookies without Validation and Integrity Checking
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Sunhillo Corporation | SureLine | 8.0.0 < 9.1.5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.319%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-19T14:41:46 |
| Published | 2026-10-27T19:43:34 |
| Patch Date | 2026-10-27 |
| Last Updated | 2026-10-28T16:13:31 |
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