How severe is CVE-2023-42143?

CVE-2023-42143 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-42143 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42143?

CVE-2023-42143 affects Shelly Trv Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-42143?

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

Does CVE-2023-42143 have an EU (EUVD) identifier?

Yes. CVE-2023-42143 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-46602.

When was CVE-2023-42143 published?

CVE-2023-42143 was published on 2024-01-23 and last updated on 2026-06-17.

CVE-2023-42143

CVE-2023-42143 is a medium-severity vulnerability in Shelly Trv Firmware with a CVSS 3.x base score of 5.4. 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-354.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-46602
Weakness: CWE-354
Affected product: Shelly Trv Firmware
Published: 2024-01-23
Last modified: 2026-06-17

Description

Missing Integrity Check in Shelly TRV 20220811-152343/v2.1.8@5afc928c allows malicious users to create a backdoor by redirecting the device to an attacker-controlled machine which serves the manipulated firmware file. The device is updated with the manipulated firmware.

Frequently asked questions

What is CVE-2023-42143?: Missing Integrity Check in Shelly TRV 20220811-152343/v2.1.8@5afc928c allows malicious users to create a backdoor by redirecting the device to an attacker-controlled machine which serves the manipulated firmware file. The device is updated with the manipulated firmware.
How severe is CVE-2023-42143?: CVE-2023-42143 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-42143 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42143?: CVE-2023-42143 affects Shelly Trv Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-42143?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-42143 have an EU (EUVD) identifier?: Yes. CVE-2023-42143 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-46602.
When was CVE-2023-42143 published?: CVE-2023-42143 was published on 2024-01-23 and last updated on 2026-06-17.

References

https://www.kth.se/cs/nse/research/software-systems-architecture-and-security/projects/ethical-hacking-1.1279219

Affected products (1)

cpe:2.3:o:shelly:trv_firmware:2.1.8:*:*:*:*:*:*:*

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