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CVE-2025-5688

Good to know:

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Date: June 4, 2025

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.

Severity Score

Related Resources (3)

https://aws.amazon.com/security/security-bulletins/AWS-2025-012/
https://nvd.nist.gov/vuln/detail/CVE-2025-5688
https://www.mend.io/vulnerability-database/CVE-2025-5688

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

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Upgrade Version

Upgrade to version https://github.com/FreeRTOS/FreeRTOS-Plus-TCP.git - V4.3.2

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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