Ruijie Reyee OS Use of Weak Credentials

published 2024-12-06 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-41639

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits: 0; none known

Ruijie Reyee OS versions 2.206.x up to but not including 2.320.x uses weak credential mechanism that could allow an attacker to easily calculate MQTT credentials.

Patch / fix

fixed in 2

Ruijie Reyee OS 2.320.x
ruijie reyee_os 2.320.x

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-338-01 updated 2024-12-10 cvss 5.9

Ruijie Reyee OS (Update A)

Ruijie Reyee OS >=2.206.x, <2.320.x
affected: mitigation “Ruijie reports that the issues have been fixed on the cloud and no action is needed by end users.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 23 mo ago (2024-12-06)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Ruijie Reyee OS
ruijie reyee_os

Classification

Weakness

CWE-1391 Use of Weak Credentials

References

cisa.gov /news-events/ics-advisories/icsa-24-338-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2024-45722
NVD CVE-2024-45722

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