The Kerlink firewall in ChirpStack chirpstack-mqtt-forwarder before 4.2.1 and…
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00651 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chirpstack:gateway_bridge:*:*:*:*:*:*:*:* | before 4.0.11 | Vulnerable | chirpstack |
| cpe:2.3:a:chirpstack:mqtt_forwarder:*:*:*:*:*:*:*:* | before 4.2.1 | Vulnerable | chirpstack |
- cpe:2.3:a:chirpstack:gateway_bridge:*:*:*:*:*:*:*:* Versions before 4.0.11 Vulnerable ·chirpstack
- cpe:2.3:a:chirpstack:mqtt_forwarder:*:*:*:*:*:*:*:* Versions before 4.2.1 Vulnerable ·chirpstack
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-29862
- 2026-10-03 Alias added: GHSA-35c8-rp3m-p5v6
- 2026-10-16 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2024-29862 · CVE Program
- CVE-2024-29862 · NVD
- FIRST EPSS
- GHSA-35c8-rp3m-p5v6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences