CVE-2026-83657
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to…
- Risk score
- 47/100
- CVSS
- 5.5 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
- Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
- Affected
- Microsoft Windows 10 1809
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Microsoft Windows 10 1809: Red, act today. Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
The flaws
- CVE-2026-83657: Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to… (CVSS 5.5 · EPSS 0%)
- CVE-2026-102210: Heap buffer overflow (CVSS 9.8 · EPSS 1%)
- CVE-2026-69639: Heap buffer overflow (CVSS 9.8 · EPSS 1%)
- CVE-2026-69985: 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 1809
Where it stands
- No known exploitation
Connects to
- Same weakness: CWE-1390 (CWE-1390). 21 other warnings in 30 days
- Same product: Earlier Microsoft Windows 10 1809 warnings. 155 in the last 90 days
Why it is Yellow
- CVSS 5.5 medium
- On your watchlist: windows server
References
Original description
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
Last activity 13 Oct 2026. Patch Forecast updates every hour.