CVE-2009-3523

mediumpriority · track · 38EPSS 0.008 · 56 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

0.78% (56th) EPSS

CVSS 6.9 · medium

Is it mine?

30 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

aavmKer4.sys in avast! Home and Professional for Windows before 4.8.1356 does not properly validate input to IOCTLs (1) 0xb2d6000c and (2) 0xb2d60034, which allows local users to gain privileges via IOCTL requests using crafted kernel addresses that trigger memory corruption, a different vulnerability than CVE-2008-1625.

cvss

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

6.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.9mediumAV:L/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.4 · impact 10

v2.05.9mediumAV:L/AC:M/Au:N/C:C/I:C/A:C/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-12406Avast! 4.7 - 'aavmker4.sys' Local Privilege Escalationfunctional · exploit_db

affected products (30)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
avast avast antivirus home≤ 4.8.1351nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.7.1043nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.7.1098nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.7.827nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.7.844nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.7.869nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1169nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1195nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1201nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1227nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1229nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1282nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1290nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1296nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus home= 4.8.1335nvdUScpe:2.3:a:avast:avast_antivirus_home:*:*:*:*:*:*:*:*
avast avast antivirus professional≤ 4.8.1351nvdUScpe:2.3:a:avast:avast_antivirus_professional:*:*:*:*:*:*:*:*
avast avast antivirus professional= 4.7.1043nvdUScpe:2.3:a:avast:avast_antivirus_professional:*:*:*:*:*:*:*:*
avast avast antivirus professional= 4.7.1098nvdUScpe:2.3:a:avast:avast_antivirus_professional:*:*:*:*:*:*:*:*
avast avast antivirus professional= 4.7.827nvdUScpe:2.3:a:avast:avast_antivirus_professional:*:*:*:*:*:*:*:*

showing 20 of 30

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 2009-10-01modified 2026-06-16

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references (8)

External citations — patches, advisories, analysis.

scry

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