Firewalla BTLE Weak Credentials

published 2024-08-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-38705

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits: 0; none known

A weak credential vulnerability exists in Firewalla Box Software versions before 1.979. This vulnerability allows a physically close attacker to use the license UUID for authentication and provision SSH credentials over the Bluetooth Low-Energy (BTLE) interface. Once an attacker gains access to the LAN, they could log into the SSH interface using the provisioned credentials. The license UUID can be acquired through plain-text Bluetooth sniffing, reading the QR code on the bottom of the device, or brute-forcing the UUID (though this is less likely).

Patch / fix

fixed in 2

Firewalla Box Software 1.979
firewalla box_software 1.979

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-08-12)

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

labs.greynoise.io https://www.labs.greynoise.io/grimoire/2024-08-20-bluuid-firewalla/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Firewalla Box Software
firewalla box_software

Classification

Weakness

CWE-1391 Use of Weak Credentials

References

labs.greynoise.io /grimoire/2024-08-20-bluuid-firewalla/
technical-description, exploit
vulncheck.com /advisories/firewalla-bt-weak-credentials
third-party-advisory

Sources

CVE List CVE-2024-40892
NVD CVE-2024-40892

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary