VulnerabilityModified
CVE-2021-33834
This could cause memory corruption or a system crash.
HIGH 7.1EPSS 0.19%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in iscflashx64.sys 3.9.3.0 in Insyde H2OFFT 6.20.00. When handling IOCTL 0x22229a, the input used to allocate a buffer and copy memory is mishandled. This could cause memory corruption or a system crash.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.19% probability · 9th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- insyde/h2offt · insyde/iscflashx64.sys
- Source
- cve@mitre.org
References
- https://www.insyde.com/security-pledgeNot Applicable
- https://www.insyde.com/security-pledge/SA-2021004Vendor Advisory
- https://www.insyde.com/security-pledgeNot Applicable
- https://www.insyde.com/security-pledge/SA-2021004Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.