How severe is CVE-2023-43699?

CVE-2023-43699 has a CVSS 3.x base score of 7.5, rated high 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 none.

Is CVE-2023-43699 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43699?

CVE-2023-43699 affects Sick Apu0200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43699?

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-2023-43699 published?

CVE-2023-43699 was published on 2023-10-09 and last updated on 2026-06-17.

CVE-2023-43699

CVE-2023-43699 is a high-severity vulnerability in Sick Apu0200 Firmware with a CVSS 3.x base score of 7.5. 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-307.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Sick Apu0200 Firmware
Published: 2023-10-09
Last modified: 2026-06-17

Description

Improper Restriction of Excessive Authentication Attempts in RDT400 in SICK APU allows an unprivileged remote attacker to guess the password via trial-and-error as the login attempts are not limited.

Frequently asked questions

What is CVE-2023-43699?: Improper Restriction of Excessive Authentication Attempts in RDT400 in SICK APU allows an unprivileged remote attacker to guess the password via trial-and-error as the login attempts are not limited.
How severe is CVE-2023-43699?: CVE-2023-43699 has a CVSS 3.x base score of 7.5, rated high 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 none.
Is CVE-2023-43699 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43699?: CVE-2023-43699 affects Sick Apu0200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43699?: 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-2023-43699 published?: CVE-2023-43699 was published on 2023-10-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sick:apu0200_firmware:*:*:*:*:*:*:*:*

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