Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-41841 |
CWE-ID | CWE-453 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
AhciBusDxe Hardware solutions / Drivers |
Vendor | Insyde Software |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU60266
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-41841
CWE-ID:
CWE-453 - Insecure Default Variable Initialization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the SMM (System Management Mode) branch that registers a SWSMI handler does not sufficiently check or validate the allocated table variables EFI_BOOT_SERVICES and EFI_RUNTIME_SERVICES. A remote attacker can overwrite address location of the LocateHandleBuffer function and execute arbitrary code on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsAhciBusDxe: before 5.0: 05.08.29
CPE2.3 External linkshttps://www.insyde.com/security-pledge
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.