Buffer Overflow Vulnerability in AWS Products
CVE-2025-5688

7.5HIGH

Key Information:

Vendor

Amazon

Status
Freertos
Vendor
CVE Published:
4 June 2025

What is CVE-2025-5688?

A buffer overflow vulnerability has been found in AWS services that process LLMNR or mDNS queries with excessively long DNS names. This flaw permits out-of-bounds writes, potentially leading to system instability or exploitation. Users are strongly encouraged to upgrade to the latest version and ensure that any derived or forked code incorporates the necessary security patches to mitigate this issue.

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Deploy the Patch

Affected Version(s)

FreeRTOS 2.3.4 < 4.3.2

References

https://aws.amazon.com/security/security-bulletins/AWS-20...
vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/ta...
patch
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/ad...
vendor-advisory

CVSS V4

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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