CVE-2025-52435
J2EE Misconfiguration: Data Transmission Without Encryption vulnerability in Apache NimBLE.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-5
- Affected
- apache/nimble
- Source
- security@apache.org
References
- https://github.com/apache/mynewt-nimble/commit/164f1c23c18a290908df76ed83fe848bfe4a4903Patch
- https://github.com/apache/mynewt-nimble/commit/ec3d75e909fa6dcadf1836fefc4432794a673d18Patch
- https://lists.apache.org/thread/ow8dzpsqfh9llfclh5fzh6z237brzc0sMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/01/08/1Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.