What’s Vulnerable › Vulnerabilities

CVE-2024-29862

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-21 · updated 2026-06-17

Description

The Kerlink firewall in ChirpStack chirpstack-mqtt-forwarder before 4.2.1 and chirpstack-gateway-bridge before 4.0.11 wrongly accepts certain TCP packets when a connection is not in the ESTABLISHED state.

Affected products

• chirpstack Gateway Bridge: before 4.0.11 — fixed in 4.0.11
• chirpstack Mqtt Forwarder: before 4.2.1 — fixed in 4.2.1

How to fix

Upgrade to a fixed version: chirpstack Gateway Bridge 4.0.11; chirpstack Mqtt Forwarder 4.2.1. Check the vendor advisory for mitigations.

References

• https://github.com/chirpstack/chirpstack-gateway-bridge/commit/0c1e80c9fa9f5d093ff62903caedad86ec4640b6
• https://github.com/chirpstack/chirpstack-mqtt-forwarder/commit/4fa9e6eaaec8c3ca49ebfbf6317572671f17700f
• https://github.com/chirpstack/chirpstack-gateway-bridge/commit/0c1e80c9fa9f5d093ff62903caedad86ec4640b6
• https://github.com/chirpstack/chirpstack-mqtt-forwarder/commit/4fa9e6eaaec8c3ca49ebfbf6317572671f17700f

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