{"id":"CVE-2009-4049","aliases":["EUVD-2009-4020","GHSA-842f-8x99-f2w9"],"status":"published","title":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional...","description":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01096,"percentile":0.65773,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2009-11-23T17:00:00Z","modified":"2026-06-16T23:12:56Z","exploits":[{"source":"exploitdb","id":"EDB-33360","title":"Avast! AntiVirus 4.8.1356 - 'aswRdr.sys' Driver Privilege Escalation","type":"local","platform":"windows","date":"2009-11-16","verified":true,"url":"https://www.exploit-db.com/exploits/33360"},{"source":"pocgithub","id":"fengjixuchui/CVE-2009-4049","title":"fengjixuchui/CVE-2009-4049","date":"2022-07-10","url":"https://github.com/fengjixuchui/CVE-2009-4049"}],"products":[{"vendor":"avast","product":"avast_antivirus_home"},{"vendor":"avast","product":"avast_antivirus_professional"}],"references":[{"url":"http://www.securityfocus.com/bid/37031","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"http://www.vupen.com/english/advisories/2009/3266","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory"]},{"url":"http://secunia.com/advisories/37368","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.efblog.net/2009/11/avast-aswrdrsys-kernel-pool-corruption.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/507891/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4049"},{"url":"https://github.com/advisories/GHSA-842f-8x99-f2w9"}],"sources":{"cve":[{"id":"CVE-2009-4049","description":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.","status":"published","published":"2009-11-23T17:00:00Z","modified":"2024-08-07T06:45:51.018Z","updated_at":"2026-11-02T14:33:24.782697Z"}],"euvd":[{"id":"EUVD-2009-4020","description":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.","status":"published","published":"2009-11-23T17:00:00Z","modified":"2024-08-07T06:45:51Z","updated_at":"2026-11-03T01:39:11.214145Z"}],"ghsa":[{"id":"GHSA-842f-8x99-f2w9","title":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional...","description":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.","status":"published","published":"2022-05-02T03:51:06Z","modified":"2023-01-31T05:08:32Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:49:25.206701Z"}],"nvd":[{"id":"CVE-2009-4049","description":"Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.","status":"published","published":"2009-11-23T17:30:00.67Z","modified":"2026-06-16T23:12:56.08Z","cvss":[{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:37.939838Z"}]}}