lows users to modify append-only or immutable files. NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-0323","sourceIdentifier":"cve@mitre.org","published":"1998-02-20T05:00:00.000","lastModified":"2026-06-16T21:48:09.107","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"FreeBSD mmap function allows users to modify append-only or immutable files."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:C/I:C/A:C","baseScore":10.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":true,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:bsdi:bsd_os:3.0:*:*:*:*:*:*:*","matchCriteriaId":"99235B00-0050-42BF-99EF-FCDD72D8627D"},{"vulnerable":true,"criteria":"cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:*","matchCriteriaId":"183667CA-6DF1-4BFB-AE32-9ABF55B7283A"},{"vulnerable":true,"criteria":"cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*","matchCriteriaId":"36419DD6-0DB4-4BB6-A35F-D8FDB89402F1"},{"vulnerable":true,"criteria":"cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*","matchCriteriaId":"1FC373FC-88AC-4B6D-A289-51881ACD57F7"}]}]}],"references":[{"url":"ftp://ftp.NetBSD.ORG/pub/NetBSD/misc/security/advisories/NetBSD-SA1998-003.txt.asc","source":"cve@mitre.org"},{"url":"ftp://ftp.NetBSD.ORG/pub/NetBSD/misc/security/advisories/NetBSD-SA1998-003.txt.asc","source":"af854a3a-2127-422b-91ae-364da2661108"}]}},