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CVE-2025-65503

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Date: November 23, 2025

Use after free in endpoint destructors in Redboltz async_mqtt 10.2.5 allows local users to cause a denial of service via triggering SSL initialization failure that results in incorrect destruction order between io_context and endpoint objects.

Severity Score

Related Resources (4)

https://github.com/redboltz/async_mqtt/pull/437
https://nvd.nist.gov/vuln/detail/CVE-2025-65503
https://github.com/redboltz/async_mqtt/issues/436
https://www.mend.io/vulnerability-database/CVE-2025-65503

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

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

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