CVE-2026-97817
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk61th percentile - higher than 61% of all known CVEs
Summary
Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network. Overwriting heap memory may lead to data leakage.
Risk Assessment
An authorized attacker can disclose confidential information transmitted over the network, and the buffer overflow may potentially lead to further exploitation. Organizations using the DNS Server are exposed to confidentiality breaches.
Recommendation
Update the DNS Server to the latest patched version. Restrict access to the DNS service to trusted users only.
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-2026-83869Critical
Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
- 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.
Original NVD description (English source)
Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS