{"id":"EM-20261030-Q1EH","url":"https://cyber.eventmonitor.net/incident/EM-20261030-Q1EH/","type":"cve","title":"GNU C Library Vulnerability (CVE-2026-84243)","subtitle":"CVE-2026-84243","subject":"CVE-2026-84243","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-10-30T18:18:13.650Z","firstSignal":"2026-10-30T17:43:35.000Z","lastSignal":"2026-10-30T18:18:13.650Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-10-30T18:18:13.650Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-10-30T18:18:13.650Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-10-30T17:43:35.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-10-30T18:18:13.650Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261030-Q1EH created."},{"at":"2026-10-30T18:18:13.650Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-10-30T18:18:13.650Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-10-30T18:18:13.650Z","detail":"CVSS 7 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-10-30T17:43:35.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-10-30T17:43:35.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-84243 (moderate)","text":"glibc: glibc: Arbitrary code execution via directory traversal in LANGUAGE environment variable","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-84243.json"},{"at":"2026-10-30T18:18:13.650Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-84243 (CVSS 7)","text":"The gettext family of functions in the GNU C Library version 2.0 and later accept LANGUAGE environment variable entries that contain '/' or that are equal to \"..\", unless the program is setuid or setgid (AT_SECURE).  An attacker who can set LANGUAGE in the environment of a program that uses gettext can make it load a message catalog (.mo file) from an arbitrary location in the file system.  A crafted .mo file can crash the program through out-of-range offsets, or supply translations whose format directives do not match the arguments passed by the program.  That causes undefined behaviour in th","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84243"}],"crowd":[],"reference":{"nvd":{"published":"2026-10-30T18:18:13.650","score":7,"severity":"HIGH","desc":"The gettext family of functions in the GNU C Library version 2.0 and later accept LANGUAGE environment variable entries that contain '/' or that are equal to \"..\", unless the program is setuid or setgid (AT_SECURE).  An attacker who can set LANGUAGE in the environment of a program that uses gettext ","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00297,"pct":0.22554,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}