Buffer overflow in Microsoft Windows 10 1607
CVE-2026-62878
Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.010 · change: -0.003
Affected products
- Microsoft Windows 10 1607
- Microsoft Windows 10 1809
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
- Microsoft Windows 10 Version 1809 — versions 10.0.17763.0
- Microsoft Windows Server 2012 — versions 6.2.9200.0
- Microsoft Windows Server 2012 — versions r2
- Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
- Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0
- Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.9200.0
- Microsoft Windows Server 2016 — versions 10.0.14393.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- Windows DNS Server Remote Code Execution Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-62878?
- CVE-2026-62878 is a critical-severity vulnerability in Microsoft Windows 10 1607, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-11.
- How severe is CVE-2026-62878?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-62878 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.