CVE-2024-3935

6.0 mediumEPSS 0.7%

Medium (6.0) in eclipse mosquitto. EPSS 0.7% chance of exploitation in the next 30 days.

In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an outgoing bridge connection, and that bridge connection has an incoming topic configured that makes use of topic remapping, then if the remote connection sends a crafted PUBLISH packet to the broker a double free will occur with a subsequent crash of the broker.

Severity

CVSS 4.0

6.0 medium

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-415
Published: 2024-10-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

eclipse:mosquitto

References

https://github.com/eclipse-mosquitto/mosquitto/commit/ae7a804dadac8f2aaedb24336df8496a9680fda9
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/197
https://mosquitto.org/blog/2024/10/version-2-0-19-released/
https://lists.debian.org/debian-lts-announce/2025/02/msg00022.html

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