How severe is CVE-2023-39981?

CVE-2023-39981 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-39981 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39981?

CVE-2023-39981 affects Moxa Mxsecurity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39981?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39981 published?

CVE-2023-39981 was published on 2023-09-02 and last updated on 2026-06-17.

CVE-2023-39981

CVE-2023-39981 is a high-severity vulnerability in Moxa Mxsecurity with a CVSS 3.x base score of 7.5. 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-287.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Moxa Mxsecurity
Published: 2023-09-02
Last modified: 2026-06-17

Description

A vulnerability that allows for unauthorized access has been discovered in MXsecurity versions prior to v1.0.1. This vulnerability arises from inadequate authentication measures, potentially leading to the disclosure of device information by a remote attacker.

Frequently asked questions

What is CVE-2023-39981?: A vulnerability that allows for unauthorized access has been discovered in MXsecurity versions prior to v1.0.1. This vulnerability arises from inadequate authentication measures, potentially leading to the disclosure of device information by a remote attacker.
How severe is CVE-2023-39981?: CVE-2023-39981 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-39981 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39981?: CVE-2023-39981 affects Moxa Mxsecurity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39981?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39981 published?: CVE-2023-39981 was published on 2023-09-02 and last updated on 2026-06-17.

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilities

Affected products (1)

cpe:2.3:a:moxa:mxsecurity:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Mxsecurity

CVE-2023-39979 — Critical (CVSS 9.8): There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote…
CVE-2023-33236 — Critical (CVSS 9.8): MXsecurity version 1.0 is vulnearble to hardcoded credential vulnerability. This vulnerability has been reported that…
CVE-2023-39982 — High (CVSS 7.5): A vulnerability has been identified in MXsecurity versions prior to v1.0.1. The vulnerability may put the…
CVE-2023-33235 — High (CVSS 7.2): MXsecurity version 1.0 is vulnearble to command injection vulnerability. This vulnerability has been reported in the…
CVE-2023-39980 — High (CVSS 7.1): A vulnerability that allows the unauthorized disclosure of authenticated information has been identified in MXsecurity…
CVE-2024-4740 — Medium (CVSS 5.3): MXsecurity software versions v1.1.0 and prior are vulnerable because of the use of hard-coded credentials. This…

All CVEs affecting Moxa Mxsecurity →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-101077 — Critical (CVSS 10.0): A flaw has been found in Netcore NR289-GE 1.4.5102. This impacts the function process_request of the component boa_temp…
CVE-2026-100886 — Critical (CVSS 10.0): A vulnerability was identified in Seetong T8108, T8108P, T8116 and T8232 4.6.1.4-build202604241011. The affected…
CVE-2026-77244 — Critical (CVSS 10.0): MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0,…
CVE-2026-94493 — Critical (CVSS 10.0): A vulnerability was detected in Gigatech PDV5701 1.0.31_240305_112640. This issue affects some unknown processing of…
CVE-2026-83099 — Critical (CVSS 10.0): Vulnerability in the Oracle Forms product of Oracle Fusion Middleware (component: Forms Services, C/S, Charmode).…
CVE-2026-83059 — Critical (CVSS 10.0): Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server).…

Browse all CWE-287 (Improper Authentication) vulnerabilities →