CVE-2026-83798
Microsoft Windows 10 1607: improper input validation
- Risk score
- 46/100
- CVSS
- 5.5 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing 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-2026-83798: Improper input validation (CVSS 5.5 · 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: CWE-347 (CWE-347). 75 other warnings in 30 days
- Same product: Earlier Microsoft Windows 10 1607 warnings. 396 in the last 90 days
Why it is Yellow
- CVSS 5.5 medium
- On your watchlist: windows server
References
Original description
Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.
Last activity 13 Oct 2026. Patch Forecast updates every hour.