CVE-2009-4049

avast! Home and Professional 4.8.1356.0 - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2009-4049. PoCs published by Evilcry, fengjixuchui.

AI-analyzed exploit summary This exploit targets a kernel pool corruption vulnerability in Avast! Antivirus 4.8.1356 via the aswRdr.sys driver. It uses DeviceIoControl to trigger the vulnerability, potentially leading to local privilege escalation or denial-of-service.

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.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Evilcry · clocalwindows
https://www.exploit-db.com/exploits/33360

This exploit targets a kernel pool corruption vulnerability in Avast! Antivirus 4.8.1356 via the aswRdr.sys driver. It uses DeviceIoControl to trigger the vulnerability, potentially leading to local privilege escalation or denial-of-service.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Racy
Target: Avast! Antivirus 4.8.1356
No auth needed
Prerequisites: Local access to the target system · Avast! Antivirus 4.8.1356 installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 1 stars
by fengjixuchui · poc
https://github.com/fengjixuchui/CVE-2009-4049

This repository contains a functional exploit for CVE-2009-4049, a heap-based buffer overflow in avast! TDI RDR driver (aswRdr.sys) version 4.8.1356.0. The exploit demonstrates memory corruption via a crafted IOCTL call, though it notes limitations in achieving full control over memory contents.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Moderate
Reliability
Theoretical
Target: avast! Home and Professional 4.8.1356.0
No auth needed
Prerequisites: Local access to the target system · Presence of vulnerable avast! driver (aswRdr.sys)
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (6)

Core 6
Core References
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/37031
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/3266
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37368
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/507891/100/0/threaded

Scores

EPSS 0.0110
EPSS Percentile 61.1%

Details

CWE
CWE-119
Status published
Products (2)
avast/avast_antivirus_home 4.8.1356.0
avast/avast_antivirus_professional 4.8.1356.0
Published Nov 23, 2009
Tracked Since Feb 18, 2026