// For flags

CVE-2021-33834

 

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

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.

Se descubrió un problema en iscflashx64.sys 3.9.3.0 en Insyde H2OFFT 6.20.00. Cuando se gestiona IOCTL 0x22229a, la entrada utilizada para asignar el búfer y copiar memoria se maneja incorrectamente. Esto podría causar daños en la memoria o un bloqueo del sistema.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-06-03 CVE Reserved
  • 2023-09-08 CVE Published
  • 2023-09-08 EPSS Updated
  • 2024-09-26 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
References (2)
URL Tag Source
https://www.insyde.com/security-pledge Not Applicable
URL Date SRC
URL Date SRC
URL Date SRC
https://www.insyde.com/security-pledge/SA-2021004 2023-09-13
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Insyde
Search vendor "Insyde"
 H2offt
Search vendor "Insyde" for product "H2offt"
 6.20.00
Search vendor "Insyde" for product "H2offt" and version "6.20.00"
-
Affected
Insyde
Search vendor "Insyde"
 Iscflashx64.sys
Search vendor "Insyde" for product "Iscflashx64.sys"
 3.9.3.0
Search vendor "Insyde" for product "Iscflashx64.sys" and version "3.9.3.0"
-
Affected