What is CVE-2022-1891?

CVE-2022-1891 is a medium-severity vulnerability in Lenovo Bios, classified under Heap-based Buffer Overflow. CVSS score: 6.7/10. Published 2023-01-26.

How severe is CVE-2022-1891?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Buffer overflow in Lenovo Bios

CVE-2022-1891

A buffer overflow in the SystemLoadDefaultDxe driver in some Lenovo Notebook products may allow an attacker with local privileges to execute arbitrary code.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (25.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Lenovo Bios — versions various
Lenovo Thinkbook_14-iil
Lenovo Thinkbook_14-iil_firmware
Lenovo Thinkbook_14-iml
Lenovo Thinkbook_14-iml_firmware
Lenovo Thinkbook_15-iil
Lenovo Thinkbook_15-iil_firmware
Lenovo Thinkbook_15-iml
Lenovo Thinkbook_15-iml_firmware
Lenovo Yoga_c640-13iml

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow
CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

psirt@lenovo.com (Vendor Advisory)

Frequently asked questions

What is CVE-2022-1891?: CVE-2022-1891 is a medium-severity vulnerability in Lenovo Bios, classified under Heap-based Buffer Overflow. CVSS score: 6.7/10. Published 2023-01-26.
How severe is CVE-2022-1891?: Medium severity. CVSS v3 base score is 6.7 out of 10.