{"id":"CVE-2015-8620","aliases":["EUVD-2015-8497","GHSA-h59g-9hw8-qw3x"],"status":"published","title":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet...","description":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00503,"percentile":0.43255,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2016-04-13T14:00:00Z","modified":"2026-06-17T00:34:51Z","products":[{"vendor":"avast","product":"avast_free_antivirus"},{"vendor":"avast","product":"avast_internet_security"},{"vendor":"avast","product":"avast_premier"},{"vendor":"avast","product":"avast_pro_antivirus"}],"references":[{"url":"http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://seclists.org/fulldisclosure/2016/Feb/94","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://www.securitytracker.com/id/1035093","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8620"},{"url":"https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver"},{"url":"https://github.com/advisories/GHSA-h59g-9hw8-qw3x"}],"sources":{"cve":[{"id":"CVE-2015-8620","description":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.","status":"published","published":"2016-04-13T14:00:00Z","modified":"2024-08-06T08:20:43.43Z","updated_at":"2026-11-02T14:35:40.900357Z"}],"euvd":[{"id":"EUVD-2015-8497","description":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.","status":"published","published":"2016-04-13T14:00:00Z","modified":"2024-08-06T08:20:43Z","updated_at":"2026-11-03T01:57:26.810911Z"}],"ghsa":[{"id":"GHSA-h59g-9hw8-qw3x","title":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet...","description":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.","status":"published","published":"2022-05-13T01:11:20Z","modified":"2025-04-12T12:59:35Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:26.909163Z"}],"nvd":[{"id":"CVE-2015-8620","description":"Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.","status":"published","published":"2016-04-13T14:59:03.437Z","modified":"2026-06-17T00:34:51.973Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"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":"2026-11-02T14:03:16.97467Z"}]}}