CVE-2026-65799: Windows DNS Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally.
CSIRTS triage
- What
- An integer overflow or wraparound in Windows DNS allows local privilege escalation.
- Who is affected
- Authorized local users on systems running Windows DNS are affected.
- Urgency
- Moderate urgency; CVSS 6.7 medium-high severity privilege escalation requiring prior local access.
- Action
- Apply the latest Windows security update addressing CVE-2026-65799.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65799
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-657990.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-65799 | coverage & exploitation status | NVD · CVE.org |
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