Authentication Bypass in Sunhillo SureLine Enables User Impersonation
CVE-2026-112352
9.1CRITICAL
What is CVE-2026-112352?
The vulnerability in Sunhillo SureLine prior to version 9.1.5 allows remote attackers to bypass authentication processes. By exploiting this flaw, an unauthenticated attacker can forge a session cookie that only contains a cleartext username. This method can facilitate user impersonation by satisfying the login checks in critical functions like checkLogin and networkDiag.cgi. With this access, attackers can potentially execute commands at the root level, enabling further compromise of the system.
Affected Version(s)
SureLine 8.0.0 < 9.1.5
References
CVSS V4
Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None
Timeline
Vulnerability published
Vulnerability Reserved
Credit
Bruno Alvarenga
Rafael Salema
Allan Victor
Mateus RomĂŁo
Ewerton Reis