{"id":"CVE-2003-0870","aliases":["EUVD-2003-0860","GHSA-4mv7-62g7-98v4"],"status":"published","title":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary...","description":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary code via an HREF with a large number of escaped characters in the server name.","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":"2026-11-08","score":0.15429,"percentile":0.96813,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-787"],"published":"2003-10-21T04:00:00Z","modified":"2026-06-16T22:03:06Z","exploits":[{"source":"exploitdb","id":"EDB-23263","title":"Opera 7.11/7.20 HREF - Malformed Server Name Heap Corruption","type":"dos","platform":"multiple","date":"2003-10-20","verified":true,"url":"https://www.exploit-db.com/exploits/23263"}],"products":[{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://www.securityfocus.com/bid/8853","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Exploit","Patch","Third Party Advisory","VDB Entry","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/13458","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://archives.neohapsis.com/archives/vulnwatch/2003-q4/0016.html","tags":["mailing-list","x_refsource_VULNWATCH","x_transferred","Broken Link"]},{"url":"http://www.atstake.com/research/advisories/2003/a102003-1.txt","tags":["vendor-advisory","x_refsource_ATSTAKE","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-0870"},{"url":"https://github.com/advisories/GHSA-4mv7-62g7-98v4"}],"sources":{"cve":[{"id":"CVE-2003-0870","description":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary code via an HREF with a large number of escaped characters in the server name.","status":"published","published":"2003-10-21T04:00:00Z","modified":"2024-08-08T02:05:12.612Z","updated_at":"2026-11-02T14:20:16.757505Z"}],"euvd":[{"id":"EUVD-2003-0860","description":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary code via an HREF with a large number of escaped characters in the server name.","status":"published","published":"2003-10-21T04:00:00Z","modified":"2024-08-08T02:05:12Z","updated_at":"2026-11-03T01:15:06.016782Z"}],"ghsa":[{"id":"GHSA-4mv7-62g7-98v4","title":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary...","description":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary code via an HREF with a large number of escaped characters in the server name.","status":"published","published":"2022-04-29T01:27:08Z","modified":"2023-01-30T05:01:44Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:28.346354Z"}],"nvd":[{"id":"CVE-2003-0870","description":"Heap-based buffer overflow in Opera 7.11 and 7.20 allows remote attackers to execute arbitrary code via an HREF with a large number of escaped characters in the server name.","status":"published","published":"2003-11-17T05:00:00Z","modified":"2026-06-16T22:03:06.84Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:00:47.41445Z"}]}}