{"id":"CVE-2006-5556","url":"https://www.cyber-defence.io/tools/cve/CVE-2006-5556","generatedAt":"2026-10-27T19:39:15.467Z","title":"Buffer overflow in the localtime_r function, and certain other functions, in libc in HP-UX B.11.11 and possibly other versions allows local users to execute arbitrary code via a long TZ environment variable.","description":"Buffer overflow in the localtime_r function, and certain other functions, in libc in HP-UX B.11.11 and possibly other versions allows local users to execute arbitrary code via a long TZ environment variable.","published":"2006-10-27T16:07:00.000Z","lastModified":"2026-06-16T22:31:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":4.6,"severity":"MEDIUM","vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["hp/hp-ux"],"epss":{"score":0.01326,"percentile":0.70763,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2006-10-24","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":2636,"kind":"exploit","title":"HP-UX 11i - 'LIBC TZ' Enviroment Variable Privilege Escalation","url":"https://www.exploit-db.com/exploits/2636","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/hp-ux/local/2636.c","file":"exploits/hp-ux/local/2636.c","published":"2006-10-24","added":"2006-10-23","updated":null,"author":"prdelka","type":"local","platform":"hp-ux","port":null,"verified":true,"codes":["OSVDB-34027","CVE-2006-5556"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.3%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://blogs.23.nu/prdelka/stories/13144/","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/20718","tags":["Exploit","Patch"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/29777","source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/2636","source":"cve@mitre.org"},{"url":"http://blogs.23.nu/prdelka/stories/13144/","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/20718","tags":["Exploit","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/29777","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/2636","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2006-5556","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."}