How severe is CVE-2025-44557?

CVE-2025-44557 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-44557 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.

How do I fix CVE-2025-44557?

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.

Does CVE-2025-44557 have an EU (EUVD) identifier?

Yes. CVE-2025-44557 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19417.

When was CVE-2025-44557 published?

CVE-2025-44557 was published on 2025-06-27 and last updated on 2026-06-17.

CVE-2025-44557

CVE-2025-44557 is a high-severity vulnerability with a CVSS 3.x base score of 8.1. 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-303.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19417
Weakness: CWE-303
Published: 2025-06-27
Last modified: 2026-06-17

Description

A state machine transition flaw in the Bluetooth Low Energy (BLE) stack of Cypress PSoC4 v3.66 allows attackers to bypass the pairing process and authentication via a crafted pairing_failed packet.

Frequently asked questions

What is CVE-2025-44557?: A state machine transition flaw in the Bluetooth Low Energy (BLE) stack of Cypress PSoC4 v3.66 allows attackers to bypass the pairing process and authentication via a crafted pairing_failed packet.
How severe is CVE-2025-44557?: CVE-2025-44557 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-44557 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.
How do I fix CVE-2025-44557?: 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.
Does CVE-2025-44557 have an EU (EUVD) identifier?: Yes. CVE-2025-44557 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19417.
When was CVE-2025-44557 published?: CVE-2025-44557 was published on 2025-06-27 and last updated on 2026-06-17.

References

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