CVE-2026-83869
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk50th percentile - higher than 50% of all known CVEs
Summary
Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
Risk Assessment
An attacker can remotely execute code on the DNS server, potentially leading to service disruption and network compromise.
Recommendation
Install security updates for DNS Server and implement monitoring of DNS service integrity.
Other vulnerabilities in DNS Server
See all- 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-2016-3227Critical
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.
- CVE-2026-97844Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97843Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97842Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97841Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97840Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97839Medium
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97838Medium
An out-of-bounds read vulnerability in the DNS Server allows an authorized attacker to disclose information over a network.
- CVE-2026-97837Medium
An out-of-bounds read vulnerability in the DNS Server allows an authorized attacker to disclose information over a network.
Original NVD description (English source)
Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS