WinFlash Driver Permissions Issue
Priority LOW 36CWE-732Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00358 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed WinFlash Driver (Phoenix): 4.5.0.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Phoenix | WinFlash Driver | before 4.5.0.0 | 4.5.0.0 | Patch available | CNA |
- WinFlash Driver VendorPhoenix Affected before 4.5.0.0 Fixed in 4.5.0.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:phoenixtech:winflash:*:*:*:*:*:windows:*:* | before 4.5.0.0 | Vulnerable | Phoenixtech |
- cpe:2.3:a:phoenixtech:winflash:*:*:*:*:*:windows:*:* Versions before 4.5.0.0 Vulnerable ·Phoenixtech
Remediation
- Fix · CNA WinFlash Driver (Phoenix) Fixed in 4.5.0.0
Timeline
- 2026-10-02 Threatist record created from CVE-2023-35841
- 2026-10-03 Alias added: GHSA-qhcp-3fxf-c8vc
References
More Phoenix vulnerabilities
- TI-2019-13287 In Phoenix SCT WinFlash 1.1.12.0 through 1.5.74.0, the included drivers could be used by… CVSS 3.1HIGH 8.8
- TI-2024-00702 Potential buffer overflow when handling UEFI variables CVSS 3.1HIGH 7.8
- TI-2024-01492 Potential buffer overflow when handling UEFI variables CVSS 3.1HIGH 7.8
- TI-2023-14825 Improper access control in Phoenix SecureCore™ Technology™ 4 CVSS 3.1HIGH 8.4
- TI-2023-04658 Improper input validation in Phoenix SecureCore™ Technology™ 4 CVSS 3.1HIGH 7.8
- TI-2025-27195 Reflected Cross-Site Scripting (XSS) in Phoenix CMS CVSS 4.0MEDIUM 5.1
Sources
- CVE-2023-35841 · CVE Program
- CVE-2023-35841 · NVD
- FIRST EPSS
- GHSA-qhcp-3fxf-c8vc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences