CVE-2025-21476 | Buffer Copy Without Checking Size of Input in Computer Vision

Memory corruption when passing parameters to the Trusted Virtual Machine during the handshake.

Published: 2025-09-24 Last update: 2025-09-25 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-21476 is rated Low Risk (31.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-21476

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.08% +0.06%
2 2025-09-25 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-21476

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2025-21476

Affected software / configurations for CVE-2025-21476

Vendor Product Version Raw CPE
qualcomm qcs6490_firmware — cpe:2.3:o:qualcomm:qcs6490_firmware:-:*:*:*:*:*:*:*
qualcomm qcs8550_firmware — cpe:2.3:o:qualcomm:qcs8550_firmware:-:*:*:*:*:*:*:*
qualcomm qcs9100_firmware — cpe:2.3:o:qualcomm:qcs9100_firmware:-:*:*:*:*:*:*:*
qualcomm sg8275_firmware — cpe:2.3:o:qualcomm:sg8275_firmware:-:*:*:*:*:*:*:*
qualcomm sg8275p_firmware — cpe:2.3:o:qualcomm:sg8275p_firmware:-:*:*:*:*:*:*:*
qualcomm sm6650_firmware — cpe:2.3:o:qualcomm:sm6650_firmware:-:*:*:*:*:*:*:*
qualcomm sm7635_firmware — cpe:2.3:o:qualcomm:sm7635_firmware:-:*:*:*:*:*:*:*
qualcomm sm7675_firmware — cpe:2.3:o:qualcomm:sm7675_firmware:-:*:*:*:*:*:*:*
qualcomm sm7675p_firmware — cpe:2.3:o:qualcomm:sm7675p_firmware:-:*:*:*:*:*:*:*
qualcomm sm8550_firmware — cpe:2.3:o:qualcomm:sm8550_firmware:-:*:*:*:*:*:*:*
qualcomm sm8550p_firmware — cpe:2.3:o:qualcomm:sm8550p_firmware:-:*:*:*:*:*:*:*
qualcomm sm8635_firmware — cpe:2.3:o:qualcomm:sm8635_firmware:-:*:*:*:*:*:*:*
qualcomm sm8635p_firmware — cpe:2.3:o:qualcomm:sm8635p_firmware:-:*:*:*:*:*:*:*
qualcomm sm8650_firmware — cpe:2.3:o:qualcomm:sm8650_firmware:-:*:*:*:*:*:*:*
qualcomm sm8650p_firmware — cpe:2.3:o:qualcomm:sm8650p_firmware:-:*:*:*:*:*:*:*
qualcomm sm8650q_firmware — cpe:2.3:o:qualcomm:sm8650q_firmware:-:*:*:*:*:*:*:*
qualcomm sm8750_firmware — cpe:2.3:o:qualcomm:sm8750_firmware:-:*:*:*:*:*:*:*
qualcomm sm8750p_firmware — cpe:2.3:o:qualcomm:sm8750p_firmware:-:*:*:*:*:*:*:*
qualcomm sxr2330p_firmware — cpe:2.3:o:qualcomm:sxr2330p_firmware:-:*:*:*:*:*:*:*
qualcomm qca6391_firmware — cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
qualcomm qca6698aq_firmware — cpe:2.3:o:qualcomm:qca6698aq_firmware:-:*:*:*:*:*:*:*
qualcomm qcn9011_firmware — cpe:2.3:o:qualcomm:qcn9011_firmware:-:*:*:*:*:*:*:*
qualcomm qcn9012_firmware — cpe:2.3:o:qualcomm:qcn9012_firmware:-:*:*:*:*:*:*:*
qualcomm qcn9274_firmware — cpe:2.3:o:qualcomm:qcn9274_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3910_firmware — cpe:2.3:o:qualcomm:wcn3910_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3950_firmware — cpe:2.3:o:qualcomm:wcn3950_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6650_firmware — cpe:2.3:o:qualcomm:wcn6650_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6750_firmware — cpe:2.3:o:qualcomm:wcn6750_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6755_firmware — cpe:2.3:o:qualcomm:wcn6755_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6855_firmware — cpe:2.3:o:qualcomm:wcn6855_firmware:-:*:*:*:*:*:*:*
qualcomm wcn6856_firmware — cpe:2.3:o:qualcomm:wcn6856_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7850_firmware — cpe:2.3:o:qualcomm:wcn7850_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7851_firmware — cpe:2.3:o:qualcomm:wcn7851_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7860_firmware — cpe:2.3:o:qualcomm:wcn7860_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7861_firmware — cpe:2.3:o:qualcomm:wcn7861_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7880_firmware — cpe:2.3:o:qualcomm:wcn7880_firmware:-:*:*:*:*:*:*:*
qualcomm wcn7881_firmware — cpe:2.3:o:qualcomm:wcn7881_firmware:-:*:*:*:*:*:*:*
qualcomm qcm5430_firmware — cpe:2.3:o:qualcomm:qcm5430_firmware:-:*:*:*:*:*:*:*
qualcomm qcm6490_firmware — cpe:2.3:o:qualcomm:qcm6490_firmware:-:*:*:*:*:*:*:*
qualcomm qcm8550_firmware — cpe:2.3:o:qualcomm:qcm8550_firmware:-:*:*:*:*:*:*:*
qualcomm qcs5430_firmware — cpe:2.3:o:qualcomm:qcs5430_firmware:-:*:*:*:*:*:*:*
qualcomm qcs615_firmware — cpe:2.3:o:qualcomm:qcs615_firmware:-:*:*:*:*:*:*:*

References for CVE-2025-21476

cvelogic Threat Intelligence