Medium severity · published Mar 18, 2019
CVE-2019-6492
SmartDefragDriver.sys (2.0) in IObit Smart Defrag 6 never frees an executable kernel pool that is allocated with user defined bytes and size when IOCTL 0x9C401CC4 is called
5.5
CVSS
0.5%
EPSS
No
On KEV
Description
SmartDefragDriver.sys (2.0) in IObit Smart Defrag 6 never frees an executable kernel pool that is allocated with user defined bytes and size when IOCTL 0x9C401CC4 is called. This kernel pointer can be leaked if the kernel pool becomes a "big" pool.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SD
Smart Defrag · Iobit
6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6492
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-6492
Exploit
https://downwithup.github.io/CVEPosts.html
More from Smart Defrag
5.5
CVE-2019-6493
SmartDefragDriver.sys (2.0) in IObit Smart Defrag 6 never frees an executable kernel pool that is allocated with user defined bytes and size when IOCTL 0x9C401CC0 is called