How severe is CVE-2023-6689?

CVE-2023-6689 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2023-6689 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6689?

CVE-2023-6689 affects Efacec Bcu 500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6689?

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-2023-6689 published?

CVE-2023-6689 was published on 2023-12-20 and last updated on 2026-06-17.

CVE-2023-6689

CVE-2023-6689 is a high-severity vulnerability in Efacec Bcu 500 Firmware with a CVSS 3.x base score of 8.2. 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 8.2)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Efacec Bcu 500 Firmware
Published: 2023-12-20
Last modified: 2026-06-17

Description

A successful CSRF attack could force the user to perform state changing requests on the application. If the victim is an administrative account, a CSRF attack could compromise the entire web application.

Frequently asked questions

What is CVE-2023-6689?: A successful CSRF attack could force the user to perform state changing requests on the application. If the victim is an administrative account, a CSRF attack could compromise the entire web application.
How severe is CVE-2023-6689?: CVE-2023-6689 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2023-6689 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6689?: CVE-2023-6689 affects Efacec Bcu 500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6689?: 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-2023-6689 published?: CVE-2023-6689 was published on 2023-12-20 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-353-02

Affected products (1)

cpe:2.3:o:efacec:bcu_500_firmware:4.07:*:*:*:*:*:*:*

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