CVE-2025-65503 — MEDIUM (5.5)

Vulnerability Description

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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redboltz	Async Mqtt	10.2.5

Related Weaknesses (CWE)

CWE-416

References

https://github.com/redboltz/async_mqtt/issues/436ExploitIssue TrackingPatch
https://github.com/redboltz/async_mqtt/pull/437Issue TrackingPatch

FAQ

What is CVE-2025-65503?

CVE-2025-65503 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ord...

How severe is CVE-2025-65503?

CVE-2025-65503 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-65503?

Check the references section above for vendor advisories and patch information. Affected products include: Redboltz Async Mqtt.