What is CVE-2022-40080?

CVE-2022-40080 is a high-severity vulnerability in Acer Aspire E5-475g, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-02-16.

How severe is CVE-2022-40080?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Acer Aspire E5-475g

CVE-2022-40080

Stack overflow vulnerability in Aspire E5-475G 's BIOS firmware, in the FpGui module, a second call to GetVariable services allows local attackers to execute arbitrary code in the UEFI DXE phase and gain escalated privileges.

Vulnerability class: Buffer Overflow

Published 2023-02-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Acer Aspire E5-475g
Acer Aspire E5-475g Firmware — versions 1.21

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

acer.com/ (Not Applicable)
github.com/10TG/vulnerabilities/blob/main/Acer/CVE-2022-40080/CVE-2022-40080.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-40080?: CVE-2022-40080 is a high-severity vulnerability in Acer Aspire E5-475g, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-02-16.
How severe is CVE-2022-40080?: High severity. CVSS v3 base score is 7.8 out of 10.