CVE-2026-18321

{"id": "CVE-2026-18321", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18321", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-31T18:54:02.722476Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@gitlab.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.0}]}, "affected": [{"source": "cve@gitlab.com", "affectedData": [{"vendor": "NTPsec", "product": "ntpsec", "versions": [{"status": "affected", "version": "0", "lessThan": "1.2.5", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-31T19:17:08.183", "references": [{"url": "https://gitlab.com/NTPsec/ntpsec/-/work_items/890", "source": "cve@gitlab.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "cve@gitlab.com", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd"}], "lastModified": "2026-08-28T15:44:39.323", "sourceIdentifier": "cve@gitlab.com"}