{"cve":"CVE-2013-4788","nvd":{"published":"2013-10-04T17:55:09.960","modified":"2026-06-16T23:57:53.880","status":"Modified","description":"The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://hmarco.org/bugs/CVE-2013-4788.html","http://seclists.org/fulldisclosure/2015/Sep/23","http://www.mandriva.com/security/advisories?name=MDVSA-2013:283","http://www.mandriva.com/security/advisories?name=MDVSA-2013:284","http://www.openwall.com/lists/oss-security/2013/07/15/9"],"products":["gnu:eglibc","gnu:glibc"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4788","score":0.11428,"percentile":0.96004,"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."]}