CVE-2026-83709
Microsoft: heap buffer overflow
- Risk score
- 56/100
- 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
- Heap-based buffer overflow in Windows NTLM allows an authorized attacker to elevate privileges locally.
- Affected
- Microsoft
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.8 high
- Named in a government or vendor bulletin
Government and vendor bulletins
References
Original description
Heap-based buffer overflow in Windows NTLM allows an authorized attacker to elevate privileges locally.
Last activity 21 Oct 2026. Patch Forecast updates every hour.