{"cve":"CVE-1999-1021","nvd":{"published":"1992-12-30T05:00:00.000","modified":"2026-06-16T21:49:32.350","status":"Modified","description":"NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16 bits are set to 0, as fixed by the NFS jumbo patch upgrade.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/117&type=0&nav=sec.sba","http://www.cert.org/advisories/CA-1992-15.html","http://www.securityfocus.com/bid/47","https://exchange.xforce.ibmcloud.com/vulnerabilities/82","http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/117&type=0&nav=sec.sba"],"products":["sun:sunos"],"source":"nvd","synced_at":"2026-10-19T19:33:01.030757803+00:00"},"epss":{"cve":"CVE-1999-1021","score":0.00411,"percentile":0.35323,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}