How severe is CVE-2023-35120?

CVE-2023-35120 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-35120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35120?

CVE-2023-35120 affects Piigab M-bus 900s Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-35120?

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

When was CVE-2023-35120 published?

CVE-2023-35120 was published on 2023-07-07 and last updated on 2026-06-17.

CVE-2023-35120

CVE-2023-35120 is a high-severity vulnerability in Piigab M-bus 900s Firmware with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Piigab M-bus 900s Firmware
Published: 2023-07-07
Last modified: 2026-06-17

Description

PiiGAB M-Bus is vulnerable to cross-site request forgery. An attacker who wants to execute a certain command could send a phishing mail to the owner of the device and hope that the owner clicks on the link. If the owner of the device has a cookie stored that allows the owner to be logged in, then the device could execute the GET or POST link request.

Frequently asked questions

What is CVE-2023-35120?: PiiGAB M-Bus is vulnerable to cross-site request forgery. An attacker who wants to execute a certain command could send a phishing mail to the owner of the device and hope that the owner clicks on the link. If the owner of the device has a cookie stored that allows the owner to be logged in, then the device could execute the GET or POST link request.
How severe is CVE-2023-35120?: CVE-2023-35120 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-35120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35120?: CVE-2023-35120 affects Piigab M-bus 900s Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-35120?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-35120 published?: CVE-2023-35120 was published on 2023-07-07 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-187-01

Affected products (1)

cpe:2.3:o:piigab:m-bus_900s_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Piigab M-bus 900s Firmware

CVE-2023-35987 — Critical (CVSS 9.8): PiiGAB M-Bus contains hard-coded credentials which it uses for authentication.
CVE-2023-36859 — High (CVSS 8.8): PiiGAB M-Bus SoftwarePack 900S does not correctly sanitize user input, which could allow an attacker to inject…
CVE-2023-32652 — High (CVSS 8.0): PiiGAB M-Bus does not validate identification strings before processing, which could make it vulnerable to cross-site…
CVE-2023-34995 — High (CVSS 7.5): There are no requirements for setting a complex password for PiiGAB M-Bus, which could contribute to a successful…
CVE-2023-34433 — High (CVSS 7.5): PiiGAB M-Bus stores passwords using a weak hash algorithm.
CVE-2023-31277 — High (CVSS 7.5): PiiGAB M-Bus transmits credentials in plaintext format.

All CVEs affecting Piigab M-bus 900s Firmware →

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