CVE-2009-4049

highpriority · track · 39EPSS 0.011 · 65 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · functional

Likely / severe?

1.10% (65th) EPSS

CVSS 7.2 · high

Is it mine?

3 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.2

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v2.06.5mediumAV:L/AC:L/Au:N/C:C/I:C/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
avast avast antivirus home= 4.8.1356.0nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus professional= 4.8.1356.0nvdUScpe:2.3:a:avast:avast_antivirus_professional:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-11-23modified 2026-06-16

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+21038 more

references (12)

External citations — patches, advisories, analysis.

scry

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