CVE-2026-83635
HighCVSS 7.5Summary
Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network.
Risk Assessment
An attacker could remotely cause DNS service unavailability, disrupting name resolution and dependent services across the organization.
Recommendation
Urgently install Microsoft patches for DNS Server and consider limiting public network exposure of the DNS server.
Other vulnerabilities in DNS Server
See all- CVE-2026-88116High
Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-88114High
Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-88112High
Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-85903High
Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-83889High
Release of invalid pointer or reference in DNS Server allows an authorized attacker to execute code over a network.
- CVE-2026-83642High
Access of resource using incompatible type ('type confusion') in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-70167High
Access of resource using incompatible type ('type confusion') in DNS Server allows an authorized attacker to execute code over a network.
- CVE-2026-70127High
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-96113Critical
A heap-based buffer overflow in DNS Server allows an unauthorized attacker to execute code over a network. The vulnerability stems from improper memory handling during DNS query processing.
- CVE-2026-83869Critical
Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS