CVE-2005-1770
CVE-2005-1770 is a high-severity vulnerability in Alwil Avast Antivirus with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 2.0 base score 7.2)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Alwil Avast Antivirus
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2005-1770?
- 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.
- How severe is CVE-2005-1770?
- CVE-2005-1770 has a CVSS 2.0 base score of 7.2, rated high severity.
- Is CVE-2005-1770 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2005-1770?
- CVE-2005-1770 primarily affects Alwil Avast Antivirus. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2005-1770?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2005-1770 published?
- CVE-2005-1770 was published on 2005-05-31 and last updated on 2026-06-16.
References
Affected products (27)
- cpe:2.3:a:alwil:avast_antivirus:4.0.168:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.172:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.183:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.202:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.211:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.229:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.0.235:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.260:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.268:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.278:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.287:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.289:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.304:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.319:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.335:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.342:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.357:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.389:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.396:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.412:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.418:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.1.501:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.5.518:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.5.549:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.5.561:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.6.603:*:*:*:*:*:*:*
- cpe:2.3:a:alwil:avast_antivirus:4.6.623:*:*:*:*:*:*:*
More vulnerabilities in Alwil Avast Antivirus
- CVE-2006-2869 — Critical (CVSS 10.0): Unspecified vulnerability in the CHM unpacker in avast! before 4.7.844 has unknown impact and remote attack vectors.
- CVE-2006-4626 — High (CVSS 7.5): Heap-based buffer overflow in alwil avast! Anti-virus Engine before 4.7.869 allows remote attackers to execute…
- CVE-2005-2385 — High (CVSS 7.5): Buffer overflow in a third-party compression library (UNACEV2.DLL), as used in avast! Antivirus Home/Professional…
- CVE-2005-1719 — High (CVSS 7.5): Unknown vulnerability in ALWIL avast! antivirus 4 (4.6.6230) and earlier, when running on Windows NT 4.0, does not…
- CVE-2006-1355 — High (CVSS 7.2): avast! Antivirus 4.6.763 and earlier sets "BUILTIN\Everyone" permissions to critical system files in the installation…
- CVE-2005-3214 — Medium (CVSS 5.1): Multiple interpretation error in unspecified versions of Avast Antivirus allows remote attackers to bypass virus…
All CVEs affecting Alwil Avast Antivirus →
Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities
- CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
- CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
- CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
- CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.