{"id":"CVE-2009-1491","aliases":["EUVD-2009-1488","GHSA-q82w-r89w-5v2j"],"status":"published","title":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus...","description":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02818,"percentile":0.86656,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2009-05-05T19:00:00Z","modified":"2026-06-16T23:07:22Z","products":[{"vendor":"mcafee","product":"groupshield"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50354","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.nmrc.org/~thegnome/blog/apr09/","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1491"},{"url":"http://www.nmrc.org/~thegnome/blog/apr09"},{"url":"https://github.com/advisories/GHSA-q82w-r89w-5v2j"}],"sources":{"cve":[{"id":"CVE-2009-1491","description":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.","status":"published","published":"2009-05-05T19:00:00Z","modified":"2024-08-07T05:13:25.56Z","updated_at":"2026-11-02T14:33:25.126493Z"}],"euvd":[{"id":"EUVD-2009-1488","description":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.","status":"published","published":"2009-05-05T19:00:00Z","modified":"2024-08-07T05:13:25Z","updated_at":"2026-11-03T01:39:21.330306Z"}],"ghsa":[{"id":"GHSA-q82w-r89w-5v2j","title":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus...","description":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.","status":"published","published":"2022-05-02T03:25:43Z","modified":"2025-04-09T04:10:19Z","cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:00.026247Z"}],"nvd":[{"id":"CVE-2009-1491","description":"McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.","status":"published","published":"2009-05-05T19:30:00.203Z","modified":"2026-06-16T23:07:22.83Z","cvss":[{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:35.136779Z"}]}}