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CVE-2026-121803

Out-of-bounds Write in UFS Firmware

CVSS 3.1 8.8 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 4 Nov 2026 04:57:16 UTC. Read the latest advisory.

cve-program · CVE-2026-121803

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-121803

Published

Out-of-bounds Write in UFS Firmware

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.

Source published
4 Nov 2026 03:20:58 UTC
Source modified
4 Nov 2026 03:20:58 UTC
Saved here
4 Nov 2026 04:57:16 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 8.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

ChangeIntel

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Sources read 15 Nov 13:16 UTC · 255 of 275 readable · 250 fully read · documentation 469/469 current

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