CVE-2026-121803: Out-of-bounds Write in UFS Firmware
Published Nov 4, 2026
·Updated
In UFS Field Firmware Update (FFU) functionality, there is a possible out-of-bounds write due to missing bounds checking on the PRDT table size. This could lead to local code execution or denial of service with no additional execution privileges needed.
Other sources
Rejected reason: This CVE ID is a duplicate of CVE-2026-80335 (VULN-002 dldownloadmidst) and has been rejected.
— NVD
Event History
Nov 4, 2026
CVE Published
via MITRE·03:20 AM
Data Sourced
via MITRE·03:20 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·04:17 AM
Description
Frequently Asked Questions
1
Should this CVE be tracked or remediated independently?
No. This CVE has been rejected because it is a duplicate of CVE-2026-80335 (VULN-002 dl_download_midst). Track the duplicate CVE instead.
2
What level of access would exploitation require?
The reported issue is locally exploitable and requires no additional execution privileges. Successful exploitation could result in local code execution or denial of service.