CVE-2026-112352: Sunhillo SureLine authentication bypass via session cookie

CVE-2026-112352 · Severity: critical · CVSS 9.1 · Published 2026-10-27

Sunhillo SureLine is a web-based appliance management system used to administer network infrastructure. An unauthenticated attacker can forge a session cookie with only a cleartext username to bypass authentication and impersonate any user, then execute commands with root privileges on the appliance.

Technologies: Sunhillo Sureline. Vendors: Sunhillo.

Quick answers

Is CVE-2026-112352 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112352 being exploited in the wild.
How severe is CVE-2026-112352?
Critical severity, with a CVSS score of 9.1, published 27 October 2026.
Which products and versions are affected?
Sunhillo Sureline 8.0.0 before 9.1.5.
Is there a fix for CVE-2026-112352?
Yes: fixed in SureLine 9.1.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-112352 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-112352?
Check whether you run Sunhillo Sureline at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: SureLine 9.1.5

Technical details

The vulnerability exists in the checkLogin function within libwebcmn.so and networkDiag.cgi, which validates session cookies based solely on a cleartext username without cryptographic integrity checks or random identifiers. An unauthenticated remote attacker can forge a session cookie containing a guessed default account name (such as "Admin" or "sftp_user") to satisfy the login check and gain authenticated access, chaining into arbitrary root command execution.

Affected products

  • Sunhillo SureLine 8.0.0 before 9.1.5

Timeline

  • 2026-10-27: disclosed

References

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