CVE-2026-112352

critical · 9.1

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.

9.1

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-10-27

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-565

References

https://www.sunhillo.com/product/sureline/
https://www.vulncheck.com/advisories/sunhillo-sureline-authentication-bypass-via-session-cookie

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-112352