Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

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

Critical 9.1

In plain English

A critical-severity security flaw in SureLine from Sunhillo Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)1.5%top 26.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Sunhillo Corporation	SureLine	8.0.0 – before 9.1.5

Weakness: CWE-565 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Product Webpage product
VulnCheck Advisory: Sunhillo SureLine Authentication Bypass via Session Cookie third-party-advisory