How severe is CVE-2023-4149?

CVE-2023-4149 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4149?

CVE-2023-4149 primarily affects Wago 0852-0602 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4149?

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

When was CVE-2023-4149 published?

CVE-2023-4149 was published on 2023-11-21 and last updated on 2026-06-17.

CVE-2023-4149

CVE-2023-4149 is a critical-severity vulnerability in Wago 0852-0602 Firmware with a CVSS 3.x base score of 9.8. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Wago 0852-0602 Firmware
Published: 2023-11-21
Last modified: 2026-06-17

Description

A vulnerability in the web-based management allows an unauthenticated remote attacker to inject arbitrary system commands and gain full system control. Those commands are executed with root privileges. The vulnerability is located in the user request handling of the web-based management.

Frequently asked questions

What is CVE-2023-4149?: A vulnerability in the web-based management allows an unauthenticated remote attacker to inject arbitrary system commands and gain full system control. Those commands are executed with root privileges. The vulnerability is located in the user request handling of the web-based management.
How severe is CVE-2023-4149?: CVE-2023-4149 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4149?: CVE-2023-4149 primarily affects Wago 0852-0602 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4149?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-4149 published?: CVE-2023-4149 was published on 2023-11-21 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2023-037

Affected products (3)

cpe:2.3:o:wago:0852-0602_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:0852-0603_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:0852-1605_firmware:*:*:*:*:*:*:*:*

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