Withdrawn: this CVE is not a vulnerability
The assigning CNA withdrew CVE-2026-121803 on 4 November 2026, and it carries the Rejected state at CVE.org and NVD. It must not be treated as a live finding. Its pre-withdrawal severity, score and exploitability are withheld below; the record itself is kept because withdrawals are reversible and because the reject reason is the correction worth publishing.
CVE-2026-121803
Out-of-bounds Write in UFS Firmware
Description
Rejected reason: This CVE ID is a duplicate of CVE-2026-80335 (VULN-002 dl_download_midst) and has been rejected.
INFO
Published Date :
Nov. 4, 2026, 4:17 a.m.
Last Modified :
Nov. 4, 2026, 5:18 a.m.
Remotely Exploit :
—
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-121803
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 63f92e9c-2193-4c24-98a9-93640392c3d3 | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-121803 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-121803 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Rejected by [email protected]
Nov. 04, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 04, 2026
Action Type Old Value New Value Changed Description 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. Rejected reason: This CVE ID is a duplicate of CVE-2026-80335 (VULN-002 dl_download_midst) and has been rejected. Removed CVSS V3.1 Unisoc: AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Removed CWE Unisoc: CWE-787 Added Affected Affected value removed. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/121xxx/CVE-2026-121803.json">CVE-2026-121803</a> Removed Reference Unisoc: https://www.unisoc.com/en/support/product-security-bulletin/2117818023857520641 -
New CVE Received by [email protected]
Nov. 04, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-787 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/121xxx/CVE-2026-121803.json">CVE-2026-121803</a> Added Reference https://www.unisoc.com/en/support/product-security-bulletin/2117818023857520641