PT-2026-58150 · Microsoft · Windows Dns

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-49175

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows DNS (affected versions not specified)

Description A heap-based buffer overflow exists in the Windows DNS Client. This flaw allows an authorized attacker with local access to elevate their privileges to administrative levels. A heap-based buffer overflow occurs when a program writes more data to a heap memory block than it can hold, potentially leading to memory corruption.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-49175

Affected Products

Windows Dns

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49175 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-49175 · Security Note
• https://twitter.com/windowsforum/status/2077114706238579096 · Twitter Post