How severe is CVE-2022-3843?

CVE-2022-3843 has a CVSS 3.x base score of 9.1, 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 none, and availability high.

Is CVE-2022-3843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3843?

CVE-2022-3843 affects Wago 852-111/000-001 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-3843?

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-2022-3843 published?

CVE-2022-3843 was published on 2023-02-16 and last updated on 2026-06-17.

CVE-2022-3843

CVE-2022-3843 is a critical-severity vulnerability in Wago 852-111/000-001 Firmware with a CVSS 3.x base score of 9.1. 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-912.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-912
Affected product: Wago 852-111/000-001 Firmware
Published: 2023-02-16
Last modified: 2026-06-17

Description

In WAGO Unmanaged Switch (852-111/000-001) in firmware version 01 an undocumented configuration interface without authorization allows an remote attacker to read system information and configure a limited set of parameters.

Frequently asked questions

What is CVE-2022-3843?: In WAGO Unmanaged Switch (852-111/000-001) in firmware version 01 an undocumented configuration interface without authorization allows an remote attacker to read system information and configure a limited set of parameters.
How severe is CVE-2022-3843?: CVE-2022-3843 has a CVSS 3.x base score of 9.1, 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 none, and availability high.
Is CVE-2022-3843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3843?: CVE-2022-3843 affects Wago 852-111/000-001 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-3843?: 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-2022-3843 published?: CVE-2022-3843 was published on 2023-02-16 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2022-055/

Affected products (1)

cpe:2.3:o:wago:852-111\/000-001_firmware:01:*:*:*:*:*:*:*

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