8.8
HighCVSS 3.1 · from VulnCheck
CVE-2026-112351
Sunhillo SureLine OS Command Injection via networkDiag.cgi
SureLine · OS command injection · CWE-78AffectedSureLine
FixUpdate to 9.1.5 or newer
PublishedOct 27, 19:43 · VulnCheck
ScoredOct 27 · 8.8 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:10 UTC
What we know
No known exploitation. CISA KEV, checked 22:10 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker needs network access and an account. CVSS: network, low privileges.
A successful attack can read and change data and take the service down. CVSS: high impact on confidentiality, integrity and availability.
Description
Sunhillo SureLine before 9.1.5 contains an OS command injection vulnerability in the networkDiag.cgi endpoint that allows an authenticated remote attacker with any web account to execute arbitrary commands as root by injecting shell metacharacters into the ipAddr or dnsAddr parameters. Attackers can bypass the incomplete character denylist from the prior CVE-2021-36380 fix using URL-encoded newline (%0a) or ampersand (%26) sequences that act as command separators after decoding in the ping, nslookup, or traceroute diagnostic modes, leading to full system compromise.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed inSureLine8.6.0 – before 9.1.59.1.5
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known