CVE-2023-35841 json
WinFlash Driver Permissions Issue
published 2024-05-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-39834
- cvss
- 7.8
- 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
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.
Patch / fix
- Phoenix WinFlash Driver 4.5.0.0
- phoenix winflash_driver 4.5.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blogs.vmware.com https://blogs.vmware.com/security/2023/10/hunting-vulnerable-kernel-drivers.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 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
- Phoenix WinFlash Driver
- phoenix winflash_driver
Classification
References
-
blogs.vmware.com
/security/2023/10/hunting-vulnerable-kernel-drivers.html
exploit, third-party-advisory
-
phoenixtech.com
/phoenix-security-notifications/cve-2023-35841/
vendor-advisory
-
phoenix.com
/security-notifications/cve-2023-35841/
vendor-advisory
-
jvn.jp
/en/vu/JVNVU93886750/index.html
third-party-advisory
Sources
- CVE List CVE-2023-35841
- NVD CVE-2023-35841
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.