What is CVE-2025-21457?

CVE-2025-21457 is a medium-severity vulnerability in Qualcomm Ar8035, classified under Buffer Over-read. CVSS score: 6.1/10. Published 2025-08-06.

How severe is CVE-2025-21457?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Qualcomm Ar8035

CVE-2025-21457

Information disclosure while opening a fastrpc session when domain is not sanitized.

Published 2025-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.001 (0.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21457?: CVE-2025-21457 is a medium-severity vulnerability in Qualcomm Ar8035, classified under Buffer Over-read. CVSS score: 6.1/10. Published 2025-08-06.
How severe is CVE-2025-21457?: Medium severity. CVSS v3 base score is 6.1 out of 10.