CVE-2026-83867
Microsoft Windows 10 1607: heap buffer overflow
- Risk score
- 62/100
- CVSS
- 7.8 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Heap-based buffer overflow in Windows Push Notifications 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-2026-83867: 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
Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Last activity 13 Oct 2026. Patch Forecast updates every hour.