This security bulletin contains one high risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to SMM callout issue. A remote attacker can hijack execution flow of a code running in System Management Mode and escalate privileges.Mitigation
Install updates from vendor's website.Vulnerable software versions
AhciBusDxe: before 5.5: 05.51.29, 5.4: 05.43.29, 5.3: 05.35.29, 5.2: 05.26.29, 5.1: 05.16.29, 5.0: 05.08.29
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.