{"id":"CVE-1999-1111","aliases":["EUVD-1999-1092","GHSA-fpjr-9gj6-mc3v"],"status":"published","title":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and...","description":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01805,"percentile":0.78689,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-11-09T05:00:00Z","modified":"2026-06-16T21:49:44Z","products":[{"vendor":"immunix","product":"stackguard"}],"references":[{"url":"http://www.securityfocus.com/bid/786","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/3524","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=94218618329838\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1111"},{"url":"https://github.com/advisories/GHSA-fpjr-9gj6-mc3v"}],"sources":{"cve":[{"id":"CVE-1999-1111","description":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-01T17:02:53.746Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1092","description":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-01T17:02:53Z","updated_at":"2026-11-03T03:50:44.304075Z"}],"ghsa":[{"id":"GHSA-fpjr-9gj6-mc3v","title":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and...","description":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.","status":"published","published":"2022-04-30T18:11:50Z","modified":"2023-01-30T05:04:40Z","updated_at":"2026-11-02T14:47:05.929455Z"}],"nvd":[{"id":"CVE-1999-1111","description":"Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.","status":"published","published":"1999-11-09T05:00:00Z","modified":"2026-06-16T21:49:44.603Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}