{"cve":"CVE-2011-4028","nvd":{"published":"2012-07-03T19:55:01.757","modified":"2026-06-16T23:34:18.733","status":"Modified","description":"The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to determine the existence of arbitrary files via a symlink attack on a temporary lock file, which is handled differently if the file exists.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-59"],"references":["http://cgit.freedesktop.org/xorg/xserver/commit/?id=6ba44b91e37622ef8c146d8f2ac92d708a18ed34","http://lists.freedesktop.org/archives/xorg/2011-October/053680.html","http://rhn.redhat.com/errata/RHSA-2012-0939.html","http://secunia.com/advisories/46460","http://secunia.com/advisories/49579"],"products":["x.org:x_server"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2011-4028","score":0.00372,"percentile":0.31162,"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."]}