CVE-2025-5688 – Microsoft Windows DNS Buffer Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-5688 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by ff89ba41-3aa1-4d27-914a-91399e9639e5

    Jun. 04, 2025

    Action Type Old Value New Value
    Added Description We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1 with LLMNR or mDNS enabled.

    Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

    Added CVSS V4.0 AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-787
    Added Reference https://aws.amazon.com/security/security-bulletins/AWS-2025-012/
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