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Vulnerability record · CVE-2005-1770 · published 31 May 2005

CVE-2005-1770: Alwil avast antivirus memory buffer overflow vulnerability

Alwil · Avast Antivirus

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.

7.2 CVSS 2.0 High EPSS 0.68% · top 49.7% CWE-119 · Memory buffer overflow
7.2CVSS 2.0 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=111712494620031&w=2
http://pb.specialised.info/all/adv/avast-adv.txt ExploitVendor Advisory
http://marc.info/?l=bugtraq&m=111712494620031&w=2
http://pb.specialised.info/all/adv/avast-adv.txt ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2006-2869Alwil avast antivirus vulnerabilityUnspecified vulnerability in the CHM unpacker in avast! before 4.7.844 has unknown impact and remote attack vectors.EPSS 1.7%7.5CVE-2006-4626Alwil avast antivirus vulnerabilityHeap-based buffer overflow in alwil avast! Anti-virus Engine before 4.7.869 allows remote attackers to execute arbitrary code via a crafted LHA file …EPSS 4.7%7.5CVE-2005-2385Alwil avast antivirus vulnerabilityBuffer overflow in a third-party compression library (UNACEV2.DLL), as used in avast! Antivirus Home/Professional Edition 4.6.665 and Server Edition …EPSS 4.0%7.5CVE-2005-1719Alwil avast antivirus vulnerabilityUnknown vulnerability in ALWIL avast! antivirus 4 (4.6.6230) and earlier, when running on Windows NT 4.0, does not properly detect certain viruses.EPSS 1.4%7.2CVE-2006-1355Alwil avast antivirus vulnerabilityavast! Antivirus 4.6.763 and earlier sets "BUILTIN\Everyone" permissions to critical system files in the installation folder, which allows local user…EPSS 0.39%5.1CVE-2005-3214Alwil avast antivirus vulnerabilityMultiple interpretation error in unspecified versions of Avast Antivirus allows remote attackers to bypass virus detection via a malicious executable…EPSS 1.7%5.0CVE-2005-2384Alwil avast antivirus vulnerabilityDirectory traversal vulnerability in a third-party compression library (UNACEV2.DLL), as used in avast! Antivirus Home/Professional Edition 4.6.665 a…EPSS 3.5%4.9CVE-2006-1892Alwil avast antivirus vulnerabilityavast! 4 Linux Home Edition 1.0.5 allows local users to modify permissions of arbitrary files via a symlink attack on the /tmp/_avast4_ temporary dir…EPSS 0.49%

Source: NIST National Vulnerability Database (record CVE-2005-1770), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.