The affected TBox RTUs run OpenVPN with root privileges and can run user defined configuration scripts.

published 2023-07-03 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-40554

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

The affected TBox RTUs run OpenVPN with root privileges and can run user defined configuration scripts. An attacker could set up a local OpenVPN server and push a malicious script onto the TBox host to acquire root privileges.

Vendor advisories

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

cisa ICSA-23-180-03 updated 2023-06-29 cvss 7.2

Ovarro TBox RTUs

Ovarro TBox LT2 <= 1.50.598 Ovarro TBox MS-CPU32 <= 1.50.598 Ovarro TBox MS-CPU32-S2 <= 1.50.598 Ovarro TBox RM2 <= 1.50.598 Ovarro TBox TG2 <= 1.50.598
affected: mitigation “Ovarro recommends users update the affected products to the latest version by downloading the newest software version from the Ovarro website in the "Customer Support" section.”

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: total
Assessed: 23 mo ago (2024-11-25)

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Ovarro TBox MS-CPU32
Ovarro TBox MS-CPU32-S2
Ovarro TBox LT2
Ovarro TBox TG2
Ovarro TBox RM2
ovarro tbox_ms-cpu32
ovarro tbox_ms-cpu32-s2
ovarro tbox_tg2
ovarro tbox_lt2
ovarro tbox_rm2

Classification

Weakness

CWE-829 Inclusion of Functionality from Untrusted Control Sphere

References

cisa.gov /news-events/ics-advisories/icsa-23-180-03
government-resource, mitigation, third-party-advisory, us-government-resource

Sources

CVE List CVE-2023-36609
NVD CVE-2023-36609

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