{"id":"CVE-2018-12243","aliases":["EUVD-2018-4221","GHSA-82xf-qv3c-486v"],"status":"published","title":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external...","description":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00767,"percentile":0.55802,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-611"],"published":"2018-09-19T15:00:00Z","modified":"2026-06-17T01:37:24Z","products":[{"vendor":"symantec","product":"messaging_gateway"},{"vendor":"symantec corporation","product":"symantec messaging gateway"}],"references":[{"url":"https://support.symantec.com/en_US/article.SYMSA1461.html","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/105330","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12243"},{"url":"https://github.com/advisories/GHSA-82xf-qv3c-486v"}],"sources":{"cve":[{"id":"CVE-2018-12243","description":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.","status":"published","published":"2018-09-19T15:00:00Z","modified":"2024-09-16T20:21:44.54Z","updated_at":"2026-11-02T14:35:06.679212Z"}],"euvd":[{"id":"EUVD-2018-4221","description":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.","status":"published","published":"2018-09-19T15:00:00Z","modified":"2024-09-16T20:21:44Z","updated_at":"2026-11-03T00:55:15.039746Z"}],"ghsa":[{"id":"GHSA-82xf-qv3c-486v","title":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external...","description":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.","status":"published","published":"2022-05-14T01:51:54Z","modified":"2023-02-02T05:04:40Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:51:55.393577Z"}],"nvd":[{"id":"CVE-2018-12243","description":"The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.","status":"published","published":"2018-09-19T15:29:19.217Z","modified":"2026-06-17T01:37:24.9Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:A/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:04:40.661264Z"}]}}