How severe is CVE-2022-45140?

CVE-2022-45140 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-2022-45140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45140?

CVE-2022-45140 primarily affects Wago 751-9301 Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-45140?

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-2022-45140 published?

CVE-2022-45140 was published on 2023-02-27 and last updated on 2026-06-17.

CVE-2022-45140

CVE-2022-45140 is a critical-severity vulnerability in Wago 751-9301 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Wago 751-9301 Firmware
Published: 2023-02-27
Last modified: 2026-06-17

Description

The configuration backend allows an unauthenticated user to write arbitrary data with root privileges to the storage, which could lead to unauthenticated remote code execution and full system compromise.

Frequently asked questions

What is CVE-2022-45140?: The configuration backend allows an unauthenticated user to write arbitrary data with root privileges to the storage, which could lead to unauthenticated remote code execution and full system compromise.
How severe is CVE-2022-45140?: CVE-2022-45140 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-2022-45140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-45140?: CVE-2022-45140 primarily affects Wago 751-9301 Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-45140?: 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-2022-45140 published?: CVE-2022-45140 was published on 2023-02-27 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2022-060/

Affected products (21)

cpe:2.3:o:wago:751-9301_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:751-9301_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:751-9301_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:752-8303\/8000-002_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:752-8303\/8000-002_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:752-8303\/8000-002_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:pfc100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:pfc100_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:pfc100_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:pfc200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:pfc200_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:pfc200_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_advanced_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_advanced_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_advanced_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_marine_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_marine_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_marine_firmware:23:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_standard_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_standard_firmware:22:-:*:*:*:*:*:*
cpe:2.3:o:wago:touch_panel_600_standard_firmware:23:*:*:*:*:*:*:*

More vulnerabilities in Wago 751-9301 Firmware

CVE-2022-45138 — Critical (CVSS 9.8): The configuration backend of the web-based management can be used by unauthenticated users, although only authenticated…
CVE-2022-3281 — High (CVSS 7.5): WAGO Series PFC100/PFC200, Series Touch Panel 600, Compact Controller CC100 and Edge Controller in multiple versions…
CVE-2022-45137 — Medium (CVSS 6.1): The configuration backend of the web-based management is vulnerable to reflected XSS (Cross-Site Scripting) attacks…
CVE-2022-22511 — Medium (CVSS 5.4): Various configuration pages of the device are vulnerable to reflected XSS (Cross-Site Scripting) attacks. An authorized…
CVE-2022-45139 — Medium (CVSS 5.3): A CORS Misconfiguration in the web-based management allows a malicious third party webserver to misuse all basic…

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