CVE-2026-85820
Microsoft Windows 10 1607: heap buffer overflow
- Risk score
- 61/100
- CVSS
- 7.8 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
- Affected
- Microsoft Windows 10 1607
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Microsoft Windows 10 1607: Red, act today. Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code over a network.
The flaws
- CVE-2026-85820: Heap buffer overflow (CVSS 7.8 · EPSS 0%)
- CVE-2026-100202: Use-after-free (CVSS 9.8 · EPSS 1%)
- CVE-2026-100222: Heap buffer overflow (CVSS 9.8 · EPSS 1%)
- CVE-2026-100220: Heap buffer overflow (CVSS 8.8 · EPSS 1%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Microsoft Windows 10 1607
Where it stands
- No known exploitation
Connects to
- Same weakness: Heap buffer overflow (CWE-122). 397 other warnings in 30 days
- Same product: Earlier Microsoft Windows 10 1607 warnings. 324 in the last 90 days
Why it is Amber
- CVSS 7.8 high
- On your watchlist: windows server
References
Original description
Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
Last activity 13 Oct 2026. Patch Forecast updates every hour.