CVE-2025-52435

moderate-risk
Published 2026-01-10

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.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Nimble

Affected Vendors

Apache

References (4)

Patch https://github.com/apache/mynewt-nimble/commit/164f1c23c18a290908df76ed83fe848bf...
Patch https://github.com/apache/mynewt-nimble/commit/ec3d75e909fa6dcadf1836fefc4432794...
Mailing List https://lists.apache.org/thread/ow8dzpsqfh9llfclh5fzh6z237brzc0s
Mailing List http://www.openwall.com/lists/oss-security/2026/01/08/1
31
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal