What is CVE-2023-35841?

CVE-2023-35841 is a high-severity vulnerability in Phoenix Winflash Driver, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2024-05-14.

How severe is CVE-2023-35841?

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

Vulnerability in Phoenix Winflash Driver

CVE-2023-35841

Exposed IOCTL with Insufficient Access Control in Phoenix WinFlash Driver on Windows allows Privilege Escalation which allows for modification of system firmware.This issue affects WinFlash Driver: before 4.5.0.0.

Published 2024-05-14 · 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 (26.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.5% 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

Phoenix Winflash Driver — versions 0
Phoenixtech Winflash

Weakness classification (CWE)

References

22d9ba52-f336-4b0d-bf1f-0efbdcc3c1de (Vendor Advisory)
22d9ba52-f336-4b0d-bf1f-0efbdcc3c1de (Exploit, Third Party Advisory)
22d9ba52-f336-4b0d-bf1f-0efbdcc3c1de (Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-35841?: CVE-2023-35841 is a high-severity vulnerability in Phoenix Winflash Driver, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2024-05-14.
How severe is CVE-2023-35841?: High severity. CVSS v3 base score is 7.8 out of 10.