Vulnerability in Iobit Smart Defrag
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. This kernel pointer can be leaked if the kernel pool becomes a "big" pool.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Iobit Smart Defrag — versions 6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- downwithup.github.io/CVEPosts.html (Exploit, Vendor Advisory)
- www.iobit.com/en/iobitsmartdefrag.php (Product, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-6493?
- CVE-2019-6493 is a medium-severity vulnerability in Iobit Smart Defrag, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2019-04-11.
- How severe is CVE-2019-6493?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2019-6493 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.