What is CVE-2026-69548?

CVE-2026-69548 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Heap-based Buffer Overflow. CVSS score: 4.6/10. Published 2026-09-08.

How severe is CVE-2026-69548?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Buffer overflow in Microsoft Windows 10 1607

CVE-2026-69548

Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

Vulnerability class: Buffer Overflow

Published 2026-09-08 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.6th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

Windows RNDIS Information Disclosure Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-69548?: CVE-2026-69548 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Heap-based Buffer Overflow. CVSS score: 4.6/10. Published 2026-09-08.
How severe is CVE-2026-69548?: Medium severity. CVSS v3 base score is 4.6 out of 10.