A buffer overflow in the SystemBootManagerDxe driver in some Lenovo Notebook products may allow an attacker with local privileges to execut…

published 2023-01-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-25164

cvss: 6.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

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

Patch / fix

fixed in 20

lenovo 100e_2nd_gen_firmware frcn23ww
lenovo 100w_gen_3_firmware gacn38ww
lenovo 13w_yoga_firmware jacn31ww
lenovo 14w_gen_2_firmware h0cn21ww
lenovo 300e_2nd_gen_firmware frcn23ww
lenovo 300w_gen_3_firmware gacn38ww
lenovo 500w_gen_3_firmware g6cn40ww
lenovo 730s-13iml_firmware brcn20ww
lenovo flex_3-11ada05_firmware fpcn26ww
lenovo flex_5-14alc05_firmware gjcn27ww
lenovo flex_5-14are05_firmware eecn39ww
lenovo flex_5-14iil05_firmware eecn40ww
lenovo flex_5-14itl05_firmware fxcn38ww
lenovo flex_5-15alc05_firmware gjcn27ww
lenovo flex_5-15iil05_firmware eccn40ww
lenovo flex_5-15itl05_firmware fxcn38ww
lenovo ideapad_1-11ada05_firmware fqcn26ww
lenovo ideapad_1-11igl05_firmware dwcn24ww
lenovo ideapad_1-14ada05_firmware fqcn26ww
lenovo ideapad_1-14igl05_firmware dwcn24ww

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 19 mo ago (2025-04-02)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Lenovo BIOS

Classification

Weakness

CWE-122 Heap-based Buffer Overflow
CWE-120 Buffer Copy without Checking Size of Input

References

support.lenovo.com /us/en/product_security/LEN-91369
vendor-advisory

Sources

CVE List CVE-2022-1892
NVD CVE-2022-1892

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary