How severe is CVE-2023-4452?

CVE-2023-4452 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-4452 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4452?

CVE-2023-4452 primarily affects Moxa Edr-g903 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4452?

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

When was CVE-2023-4452 published?

CVE-2023-4452 was published on 2023-11-01 and last updated on 2026-06-17.

CVE-2023-4452

CVE-2023-4452 is a medium-severity vulnerability in Moxa Edr-g903 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Moxa Edr-g903 Firmware
Published: 2023-11-01
Last modified: 2026-06-17

Description

A vulnerability has been identified in the EDR-810, EDR-G902, and EDR-G903 Series, making them vulnerable to the denial-of-service vulnerability. This vulnerability stems from insufficient input validation in the URI, potentially enabling malicious users to trigger the device reboot.

Frequently asked questions

What is CVE-2023-4452?: A vulnerability has been identified in the EDR-810, EDR-G902, and EDR-G903 Series, making them vulnerable to the denial-of-service vulnerability. This vulnerability stems from insufficient input validation in the URI, potentially enabling malicious users to trigger the device reboot.
How severe is CVE-2023-4452?: CVE-2023-4452 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-4452 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4452?: CVE-2023-4452 primarily affects Moxa Edr-g903 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4452?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4452 published?: CVE-2023-4452 was published on 2023-11-01 and last updated on 2026-06-17.

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-234880-edr-810-g902-g903-series-web-server-buffer-overflow-vulnerability

Affected products (8)

cpe:2.3:o:moxa:edr-g903_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-g903-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-g902_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-g902-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-810-vpn-2gsfp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-810-vpn-2gsfp-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-810-2gsfp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:edr-810-2gsfp-t_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Edr-g903 Firmware

CVE-2020-28144 — Critical (CVSS 9.8): Certain Moxa Inc products are affected by an improper restriction of operations in EDR-G903 Series Firmware Version 5.5…
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CVE-2016-0879 — High (CVSS 7.5): Moxa Secure Router EDR-G903 devices before 3.4.12 do not delete copies of configuration and log files after completing…
CVE-2016-0878 — High (CVSS 7.5): Moxa Secure Router EDR-G903 devices before 3.4.12 allow remote attackers to cause a denial of service (cold start) by…
CVE-2016-0877 — High (CVSS 7.5): Memory leak on Moxa Secure Router EDR-G903 devices before 3.4.12 allows remote attackers to cause a denial of service…
CVE-2016-0876 — High (CVSS 7.5): Moxa Secure Router EDR-G903 devices before 3.4.12 allow remote attackers to discover cleartext passwords by reading a…

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