CVE-2009-4049 json
Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast!
published 2009-11-23 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-4020
- cvss
- 7.2
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 1
- Exploit-DB
Summary
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.
Timeline
- First public exploit (EDB-33360)
- Published
Exploit prediction
1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-33360 Avast! AntiVirus 4.8.1356 - 'aswRdr.sys' Driver Privilege Escalation local, 2009-11-16
- securityfocus.com http://www.securityfocus.com/bid/37031 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
securityfocus.com
/bid/37031
vdb-entry, exploit
-
vupen.com
/english/advisories/2009/3266
vdb-entry, vendor-advisory
-
secunia.com
/advisories/37368
third-party-advisory, vendor-advisory
- efblog.net /2009/11/avast-aswrdrsys-kernel-pool-corruption.html
-
securityfocus.com
/archive/1/507891/100/0/threaded
mailing-list
- evilfingers.com /advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php
Sources
- CVE List CVE-2009-4049
- NVD CVE-2009-4049
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