CVE-2020-5955

An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets

published November 3, 2021

CVSS
—
EPSS
1%
Percentile
72.5
In the wild
Unconfirmed
What it is

⚠️ A sneaky privilege escalation opportunity lies within the InsydeH2O firmware on Intel chipsets, all because of a flaw in Int15MicrocodeSmm! Think of it like a restaurant where a waiter accidentally gives you access to the staff-only kitchen. If exploited, you could start calling the shots behind the scenes without any proper authority. If an attacker successfully escalates their privileges, they could gain the ability to execute unauthorized actions, potentially compromising sensitive data or even control over the system. This could lead to disastrous consequences, from data theft to full system takeover.

Put simply

Think of it like a restaurant where a waiter accidentally gives you access to the staff-only kitchen. If exploited, you could start calling the shots behind the scenes without any proper authority. CVE-2020-5955 reveals a vulnerability in the Int15MicrocodeSmm component of InsydeH2O firmware, allowing a caller to escalate privileges without proper authorization, which could endanger system integrity.

What to do

If an attacker successfully escalates their privileges, they could gain the ability to execute unauthorized actions, potentially compromising sensitive data or even control over the system. This could lead to disastrous consequences, from data theft to full system takeover. To mitigate this vulnerability, ensure that any updates for InsydeH2O firmware are applied immediately. Monitor for updates provided by Intel and apply patches as they become available. Regularly audit your devices to ensure firmware is up-to-date and secure. You’ve got this! Stay vigilant and keep your systems updated. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01413 · 72.5th percentile
Published
2021-11-03T00:19Z
EPSS history
Timeline
  • 03 NOV 00:19Z
    An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets
    cvelistv5