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CVSS: 10.0EPSS: 0%CPEs: 14EXPL: 0

Unspecified vulnerability in the CHM unpacker in avast! before 4.7.844 has unknown impact and remote attack vectors. • http://secunia.com/advisories/20387 http://www.avast.com/eng/av4_revision_history.html http://www.securityfocus.com/bid/18238 http://www.vupen.com/english/advisories/2006/2115 https://exchange.xforce.ibmcloud.com/vulnerabilities/26927 •

CVSS: 7.2EPSS: 0%CPEs: 1EXPL: 0

avast! Antivirus 4.6.763 and earlier sets "BUILTIN\Everyone" permissions to critical system files in the installation folder, which allows local users to gain privileges or disable protection by modifying those files. • http://forum.avast.com/index.php?topic=19862.0 http://secunia.com/advisories/19284 http://www.dslreports.com/forum/remark%2C15601404~days=9999~start=20 http://www.securityfocus.com/bid/17158 http://www.vupen.com/english/advisories/2006/1011 https://exchange.xforce.ibmcloud.com/vulnerabilities/25336 •

CVSS: 7.2EPSS: 0%CPEs: 27EXPL: 1

Buffer overflow in the Aavmker4 device driver in Avast! Antivirus 4.6 and possibly other versions allows local users to cause a denial of service (system crash) and possibly execute arbitrary code via certain signals combined with crafted input. • http://marc.info/?l=bugtraq&m=111712494620031&w=2 http://pb.specialised.info/all/adv/avast-adv.txt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 0%CPEs: 27EXPL: 0

Unknown vulnerability in ALWIL avast! antivirus 4 (4.6.6230) and earlier, when running on Windows NT 4.0, does not properly detect certain viruses. • http://securitytracker.com/id?1013991 http://www.avast.com/eng/av4_revision_history.html •