How severe is CVE-2026-66405?

CVE-2026-66405 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-66405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-66405?

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-2026-66405 published?

CVE-2026-66405 was published on 2026-08-10.

CVE-2026-66405

CVE-2026-66405 is a high-severity vulnerability 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-489.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-489
Published: 2026-08-10
Last modified: 2026-08-10

Description

DEEBOT PRO M1 and DEEBOT PRO K1VAC leave the telnet servers enabled. The telnet service may be leveraged to log in to the affected products.

Frequently asked questions

What is CVE-2026-66405?: DEEBOT PRO M1 and DEEBOT PRO K1VAC leave the telnet servers enabled. The telnet service may be leveraged to log in to the affected products.
How severe is CVE-2026-66405?: CVE-2026-66405 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-66405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-66405?: 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-2026-66405 published?: CVE-2026-66405 was published on 2026-08-10.

References

Other CWE-489 vulnerabilities

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