CVE-2024-0762: Potential buffer overflow when handling UEFI variables

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-05-14 · updated 2026-06-17
Weakness: CWE-120

Description

Potential buffer overflow in unsafe UEFI variable handling in Phoenix SecureCore™ for select Intel platforms This issue affects: Phoenix SecureCore™ for Intel Kaby Lake: from 4.0.1.1 before 4.0.1.998; Phoenix SecureCore™ for Intel Coffee Lake: from 4.1.0.1 before 4.1.0.562; Phoenix SecureCore™ for Intel Ice Lake: from 4.2.0.1 before 4.2.0.323; Phoenix SecureCore™ for Intel Comet Lake: from 4.2.1.1 before 4.2.1.287; Phoenix SecureCore™ for Intel Tiger Lake: from 4.3.0.1 before 4.3.0.236; Phoenix SecureCore™ for Intel Jasper Lake: from 4.3.1.1 before 4.3.1.184; Phoenix SecureCore™ for Intel Alder Lake: from 4.4.0.1 before 4.4.0.269; Phoenix SecureCore™ for Intel Raptor Lake: from 4.5.0.1 before 4.5.0.218; Phoenix SecureCore™ for Intel Meteor Lake: from 4.5.1.1 before 4.5.1.15.

Affected products

Phoenix SecureCore™ Technology™ 4: from 4.0.1.1 before 4.0.1.998; from 4.1.0.1 before 4.1.0.562; from 4.2.0.1 before 4.2.0.323; from 4.2.1.1 before 4.2.1.287; from 4.3.0.1 before 4.3.0.236; from 4.3.1.1 before 4.3.1.184 — fixed in 4.0.1.998, 4.1.0.562, 4.2.0.323, 4.2.1.287, 4.3.0.236, 4.3.1.184

How to fix

Upgrade to a fixed version: Phoenix SecureCore™ Technology™ 4 4.0.1.998, 4.1.0.562, 4.2.0.323, 4.2.1.287. Check the vendor advisory for mitigations.

References

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