{"id":"CVE-2011-5129","aliases":["EUVD-2011-5029","GHSA-q42x-qq8c-c587"],"status":"published","title":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial...","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.07696,"percentile":0.94637,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2012-08-30T22:00:00Z","modified":"2026-06-16T23:36:00Z","exploits":[{"source":"exploitdb","id":"EDB-18159","title":"XChat 2.8.9 - Heap Overflow Denial of Service","type":"dos","platform":"linux","date":"2011-11-25","verified":true,"url":"https://www.exploit-db.com/exploits/18159"}],"products":[{"vendor":"xchat","product":"xchat"}],"references":[{"url":"http://www.securityfocus.com/bid/50820","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","evidence"]},{"url":"http://www.securitytracker.com/id?1027468","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.osvdb.org/77629","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://www.exploit-db.com/exploits/18159","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","evidence"]},{"url":"http://packetstormsecurity.org/files/107312/xchat-dos.txt","tags":["x_refsource_MISC","x_transferred","Exploit","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-5129"},{"url":"https://github.com/advisories/GHSA-q42x-qq8c-c587"}],"sources":{"cve":[{"id":"CVE-2011-5129","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","status":"published","published":"2012-08-30T22:00:00Z","modified":"2024-08-07T00:23:40.241Z","updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2011-5029","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","status":"published","published":"2012-08-30T22:00:00Z","modified":"2024-08-07T00:23:40Z","updated_at":"2026-11-03T01:39:47.649601Z"}],"ghsa":[{"id":"GHSA-q42x-qq8c-c587","title":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial...","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","status":"published","published":"2022-05-17T05:15:13Z","modified":"2023-01-28T05:03:26Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:43:58.944932Z"}],"nvd":[{"id":"CVE-2011-5129","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","status":"published","published":"2012-08-30T22:55:03.733Z","modified":"2026-06-16T23:36:00.177Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:12.639283Z"}],"osv":[{"id":"CVE-2011-5129","description":"Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.","status":"withdrawn","published":"2012-08-30T22:55:03Z","modified":"2024-06-04T04:55:01.700964Z","updated_at":"2026-11-02T15:43:58.279353Z"}]}}