What is CVE-2025-27039?

CVE-2025-27039 is a medium-severity vulnerability in Qualcomm Fastconnect 6900, classified under CWE-390. CVSS score: 6.6/10. Published 2025-10-09.

How severe is CVE-2025-27039?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Vulnerability in Qualcomm Fastconnect 6900

CVE-2025-27039

Memory corruption may occur while processing IOCTL call for DMM/WARPNCC CONFIG request.

Published 2025-10-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.001 (0.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.1% 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-390

References

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

Frequently asked questions

What is CVE-2025-27039?: CVE-2025-27039 is a medium-severity vulnerability in Qualcomm Fastconnect 6900, classified under CWE-390. CVSS score: 6.6/10. Published 2025-10-09.
How severe is CVE-2025-27039?: Medium severity. CVSS v3 base score is 6.6 out of 10.