{"cve":"CVE-2013-3954","nvd":{"published":"2013-06-05T14:39:57.853","modified":"2026-06-16T23:56:05.060","status":"Modified","description":"The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf","http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html","http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html","http://secunia.com/advisories/54886","http://support.apple.com/kb/HT5934"],"products":["apple:iphone_os","apple:mac_os_x"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-3954","score":0.00416,"percentile":0.35929,"date":"2026-11-01"},"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."]}