CVE-2009-3522: n/a vulnerability

CVE-2009-3522: Stack-based buffer overflow in aswMon2.sys in avast!

Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows local users to cause a denial of service (system crash) and possibly gain privileges via a crafted IOCTL request to IOCTL 0xb2c80018.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 06:31 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old local Windows kernel-driver flaw in avast! Home and Professional 4.8.1351, possibly earlier versions before 4.8.1356. A local user or malware already running on the machine could crash the system and may gain higher privileges. It is not described as remotely exploitable. Exposure is likely limited to legacy Windows endpoints still running avast! Home or Professional 4.8.x, especially 4.8.1351 or earlier-than-4.8.1356 builds. Modern Avast products are not identified in the provided sources. Treat this as a legacy endpoint hygiene issue, not an internet-facing emergency. Act quickly if old Avast 4.8 is found on shared, kiosk, lab, or user-accessible Windows systems. Mitigation focus: Inventory Windows endpoints for legacy avast! Home or Professional 4.8 installations.; Update affected systems to a vendor-fixed or supported Avast version.; Remove unsupported legacy Avast installations where updates are unavailable..

Prepared: Jun 28, 2026, 18:15 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2009-3522 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 1, 2009, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
avast-aswmon2-bo(53456)CVE reference · vdb-entry, x_refsource_XF
oval:org.mitre.oval:def:6226CVE reference · vdb-entry, signature
https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.phpCVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.