CVE-2025-52435: Apache Mynewt NimBLE: Invalid error handling in pause encryption procedure in NimBLE controller

Published Jan 8, 2026
·
Updated

J2EE Misconfiguration: Data Transmission Without Encryption vulnerability in Apache NimBLE.

Improper handling of Pause Encryption procedure on Link Layer results in a previously encrypted connection being left in un-encrypted state allowing an eavesdropper to observe the remainder of the exchange. This issue affects Apache NimBLE: through <= 1.8.0.

Users are recommended to upgrade to version 1.9.0, which fixes the issue.

Affected Software

2 affected components
Apache NimBLE<=1.8.0
Apache NimBLE<1.9.0

Event History

Jan 10, 2026
CVE Published
via MITRE·09:47 AM
Data Sourced
via MITRE·09:47 AM
DescriptionWeakness
Data Sourced
via NVD·10:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-52435?

CVE-2025-52435 is classified as a medium-severity vulnerability due to potential data exposure risks.

2

How do I fix CVE-2025-52435?

To mitigate CVE-2025-52435, upgrade Apache NimBLE to version 1.9.0 or later, where the encryption handling issue has been addressed.

3

Who is affected by CVE-2025-52435?

CVE-2025-52435 affects users of Apache NimBLE versions up to and including 1.8.0.

4

What type of vulnerability is CVE-2025-52435?

CVE-2025-52435 is a data transmission vulnerability due to improper handling of encryption procedures.

5

Can CVE-2025-52435 be exploited remotely?

Yes, CVE-2025-52435 can be exploited remotely, allowing eavesdroppers to observe unencrypted data transmissions.

Contact

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