Cambium Networks cnMaestro Path Traversal

published 2022-05-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-24680

cvss: 5.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

The affected On-Premise cnMaestro is vulnerable to an arbitrary file-write through improper limitation of a pathname to a restricted directory inside a specific route. If an attacker supplied path traversal charters (../) as part of a filename, the server will save the file where the attacker chooses. This could allow an attacker to write any data to any file in the server.

Patch / fix

fixed in 1

Cambium Networks cnMaestro 2.4.2-r29, 3.0.0-r34, 3.0.3-r32

Vendor advisories

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

cisa ICSA-22-132-04 updated 2022-05-12 cvss 5.7

Cambium Networks cnMaestro

Cambium Networks cnMaestro On-Premises < 2.4.2-r29, < 3.0.0-r34, < 3.0.3-r32
affected: mitigation “Cambium Networks recommends affected users apply one of the following upgrade packages: 3.0.3-r32” support.cambiumnetworks.com

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: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-16)

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

Cambium Networks cnMaestro

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

cisa.gov /uscert/ics/advisories/icsa-22-132-04
third-party-advisory, us-government-resource

Sources

CVE List CVE-2022-1359
NVD CVE-2022-1359

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