CVE-2026-112351
CVE-2026-112351
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.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- www.sunhillo.com/product/sureline/ (product)
- www.vulncheck.com/advisories/sunhillo-sureline-os-command-injection-via-network… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112351?
- CVE-2026-112351 is a high-severity vulnerability, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-27.
- How severe is CVE-2026-112351?
- High severity. CVSS v3 base score is 8.8 out of 10.