CVE-2009-4049

Name: CVE-2009-4049
Creator: NVD / NIST
Published: 2009-11-23T17:30:00.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.10%

Last modified Jun 16, 2026

CVE-2009-4049 is a vulnerability of currently unknown severity. Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.

Metrics

EPSS Probability

1.10%

61.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Avast	Avast Antivirus Home	4.8.1356.0
Avast	Avast Antivirus Professional	4.8.1356.0

References

Timeline

Published: Nov 23, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4049?

How severe is CVE-2009-4049?

Severity scoring for CVE-2009-4049 is pending analysis. The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4049?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4049?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST