CVE-2026-83889

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.

Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.

A use-after-free vulnerability in the DNS Server component in Microsoft Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted requests.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.

An out-of-bounds read vulnerability in the DNS Server allows an authorized attacker to disclose information over a network.