An inaccurate frame deduplication process in ChirpStack Network Server 3.9.0 allows a…
Priority LOW 33CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An inaccurate frame deduplication process in ChirpStack Network Server 3.9.0 allows a malicious gateway to perform uplink Denial of Service via malformed frequency attributes in CollectAndCallOnceCollect in internal/uplink/collect.go. NOTE: the vendor's position is that there are no "guarantees that allowing untrusted LoRa gateways to the network should still result in a secure network.
Why it matters now
EPSS 0.02201 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chirpstack:network_server:3.9.0:*:*:*:*:*:*:* | 3.9.0 | Vulnerable | chirpstack |
- cpe:2.3:a:chirpstack:network_server:3.9.0:*:*:*:*:*:*:* Versions 3.9.0 Vulnerable ·chirpstack
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28349
- 2026-10-03 Alias added: GHSA-xrpw-hmf5-ch3x
References
Sources
- CVE-2020-28349 · CVE Program
- CVE-2020-28349 · NVD
- FIRST EPSS
- GHSA-xrpw-hmf5-ch3x · 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