How severe is CVE-2023-36611?

CVE-2023-36611 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-36611 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36611?

CVE-2023-36611 primarily affects Ovarro Tbox Ms-cpu32 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-36611?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-36611 published?

CVE-2023-36611 was published on 2023-07-03 and last updated on 2026-06-17.

CVE-2023-36611

CVE-2023-36611 is a medium-severity vulnerability in Ovarro Tbox Ms-cpu32 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Ovarro Tbox Ms-cpu32 Firmware
Published: 2023-07-03
Last modified: 2026-06-17

Description

The affected TBox RTUs allow low privilege users to access software security tokens of higher privilege. This could allow an attacker with “user” privileges to access files requiring higher privileges by establishing an SSH session and providing the other tokens.

Frequently asked questions

What is CVE-2023-36611?: The affected TBox RTUs allow low privilege users to access software security tokens of higher privilege. This could allow an attacker with “user” privileges to access files requiring higher privileges by establishing an SSH session and providing the other tokens.
How severe is CVE-2023-36611?: CVE-2023-36611 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-36611 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36611?: CVE-2023-36611 primarily affects Ovarro Tbox Ms-cpu32 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-36611?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36611 published?: CVE-2023-36611 was published on 2023-07-03 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-180-03

Affected products (5)

cpe:2.3:o:ovarro:tbox_ms-cpu32_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ovarro:tbox_ms-cpu32-s2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ovarro:tbox_lt2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ovarro:tbox_tg2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ovarro:tbox_rm2_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Ovarro Tbox Ms-cpu32 Firmware

CVE-2021-22648 — High (CVSS 8.8): Ovarro TBox proprietary Modbus file access functions allow attackers to read, alter, or delete the configuration file.
CVE-2021-22646 — High (CVSS 8.8): The “ipk” package containing the configuration created by TWinSoft can be uploaded, extracted, and executed in…
CVE-2021-22650 — High (CVSS 7.5): An attacker may use TWinSoft and a malicious source project file (TPG) to extract files on machine executing Ovarro…
CVE-2021-22644 — High (CVSS 7.5): Ovarro TBox TWinSoft uses the custom hardcoded user “TWinSoft” with a hardcoded key.
CVE-2021-22642 — High (CVSS 7.5): An attacker could use specially crafted invalid Modbus frames to crash the Ovarro TBox system.
CVE-2021-22640 — High (CVSS 7.5): An attacker can decrypt the Ovarro TBox login password by communication capture and brute force attacks.

All CVEs affecting Ovarro Tbox Ms-cpu32 Firmware →

Other CWE-285 (Improper Authorization) vulnerabilities

CVE-2025-65041 — Critical (CVSS 10.0): Improper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.
CVE-2023-33189 — Critical (CVSS 10.0): Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization…
CVE-2022-2595 — Critical (CVSS 10.0): Improper Authorization in GitHub repository kromitgmbh/titra prior to 0.79.1.
CVE-2021-28799 — Critical (CVSS 10.0): An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If…
CVE-2026-34048 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-5412 — Critical (CVSS 9.9): In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated…

Browse all CWE-285 (Improper Authorization) vulnerabilities →