CVE-2026-112352

Sunhillo Corporation SureLine critical authentication bypass, CVSS 9.8.

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.

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9.8CVSS base score: critical, the highest band

1.5%chance of exploitation in the next 30 days (EPSS), 73rd percentile

27 Octfirst published, 2026

Not yeton CISA's exploited list, as of 14 November 2026

Vendor and product	Sunhillo Corporation · SureLine
Type	authentication bypass
Severity	Critical 9.8 CVSS base score
Affected versions	SureLine: 8.0.0 to before 9.1.5
First published	27 October 2026
Weakness	Reliance on Cookies without Validation and Integrity Checking
Exploited	Not confirmed. Critical flaws in Sunhillo Corporation products have been exploited before: Sunhillo Corporation appears on CISA's exploited list.

What to do

Patch before it is exploited

Step 1

Apply the vendor fix and restart the affected service.

Step 2

Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant.

Step 3

Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.

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Questions

CVE-2026-112352 in short

Is CVE-2026-112352 being exploited?

Not confirmed as of 14 November 2026: CISA has not added it to its Known Exploited Vulnerabilities catalogue. Critical flaws in Sunhillo Corporation products are a frequent target, so patch before that changes; this page is updated daily.

How severe is CVE-2026-112352?

NVD rates it critical, with a CVSS base score of 9.8.

Which versions of Sunhillo Corporation SureLine are affected by CVE-2026-112352?

According to the CVE record: SureLine: 8.0.0 to before 9.1.5. Check the vendor's advisory for the fixed version.

How do I fix CVE-2026-112352?

Apply the vendor fix and restart the affected service. Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant. Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.

Sources: NVD, the CVE record, FIRST EPSS and the CISA Known Exploited Vulnerabilities catalogue. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 14 November 2026.