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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.","state":0,"publishedAt":"2026-10-27T19:43:19.355+00:00","modifiedAt":"2026-10-27T19:43:42.029+00:00","affected":[{"ecosystem":"Vendor product","name":"SureLine","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"Sunhillo Corporation\",\n                    \"product\": \"SureLine\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"8.6.0\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"9.1.5\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://www.sunhillo.com/product/sureline/","https://www.vulncheck.com/advisories/sunhillo-sureline-os-command-injection-via-networkdiag-cgi"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112351","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112351","identifiers":["CVE-2026-112351"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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