CVE-2026-83869
Critical9.8Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
- CVSS
- 9.8v3.1
- EPSS (exploit probability)
- 0.6%49th pct
- CISA KEV
- Not listed
EPSS trendFIRST daily scores, last 90 days
Daily values
| Score date | EPSS | Percentile |
|---|---|---|
| 2026-10-20 | 0.6% | 49.4% |
| 2026-10-19 | 0.6% | 49.4% |
| 2026-10-18 | 0.6% | 49.3% |
| 2026-10-16 | 0.6% | 50.0% |
| 2026-10-15 | 0.6% | 49.9% |
| 2026-10-14 | 0.6% | 49.8% |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
- microsoft windows 10 1607
- microsoft windows 10 1809
- microsoft windows 10 21h2
- microsoft windows 10 22h2
- microsoft windows 11 23h2
- microsoft windows 11 24h2
- microsoft windows 11 25h2
- microsoft windows 11 26h1
- microsoft windows 11 26h2
- microsoft windows server 2012
- microsoft windows server 2016
- microsoft windows server 2019
- microsoft windows server 2022
- microsoft windows server 2025
