CVE-2023-35841 | BDVDB-2026-235451 Detail

PhoenixWinFlash Driver

Description#

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.

Impact#

CAPEC-233 Privilege Escalation

Weaknesses#

CWE-732 Incorrect Permission Assignment for Critical Resource
CWE-782 Exposed IOCTL with Insufficient Access Control

References#

Exploit#

No public exploit known

History#

Version 12024-05-14Record published in the CVE List.
Version 22025-07-28Most recent update recorded in the CVE List.

Published

Published: 2024-05-14
Last modified: 2025-07-28

Vendor information

Vendor: Phoenix
Product: WinFlash Driver

All Phoenix vulnerabilities

Score

7.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 4.5.0.0
Fixed
4.5.0.0

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).