{"id":"CVE-2013-4788","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-4788","generatedAt":"2026-11-05T07:20:30.199Z","title":"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…","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.","published":"2013-10-04T17:55:10.000Z","lastModified":"2026-06-16T23:57:54.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5.1,"severity":"MEDIUM","vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P"},"cwe":["CWE-20"],"affected":["gnu/glibc","gnu/eglibc"],"epss":{"score":0.11428,"percentile":0.96018,"date":"2026-11-04","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2013-09-30","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":28657,"kind":"exploit","title":"glibc and eglibc 2.5/2.7/2.13 - Local Buffer Overflow","url":"https://www.exploit-db.com/exploits/28657","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/28657.c","file":"exploits/linux/local/28657.c","published":"2013-09-30","added":"2013-09-30","updated":"2013-09-30","author":"Hector Marco & Ismael Ripoll","type":"local","platform":"linux","port":null,"verified":false,"codes":["CVE-2013-4788","OSVDB-95392"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 11.4%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://hmarco.org/bugs/CVE-2013-4788.html","tags":["Exploit","Patch"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2015/Sep/23","source":"cve@mitre.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:283","source":"cve@mitre.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:284","source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2013/07/15/9","tags":["Exploit","Patch"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/61183","source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201503-04","source":"cve@mitre.org"},{"url":"http://hmarco.org/bugs/CVE-2013-4788.html","tags":["Exploit","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2015/Sep/23","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:283","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:284","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2013/07/15/9","tags":["Exploit","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/61183","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201503-04","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4788","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}