CVE-2006-4626

CVE-2006-4626 is a high-severity vulnerability in Alwil Avast Antivirus with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Heap-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 that contains extended headers with file and directory names whose concatenation triggers the overflow.

Frequently asked questions

What is CVE-2006-4626?
Heap-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 that contains extended headers with file and directory names whose concatenation triggers the overflow.
How severe is CVE-2006-4626?
CVE-2006-4626 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-4626 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4626?
CVE-2006-4626 primarily affects Alwil Avast Antivirus. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-4626?
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-2006-4626 published?
CVE-2006-4626 was published on 2006-09-07 and last updated on 2026-06-16.

References

Affected products (29)

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