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

Quick assessment

Affected
Apache Software Foundation Apache Mynewt NimBLE
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache NimBLE是美国阿帕奇（Apache）基金会的一个开源蓝牙 5.4 堆栈（主机和控制器），完全取代 Nordic 芯片组上的专有 SoftDevice。它是Apache Mynewt 项目的一部分。 Apache NimBLE 1.8.0及之前版本存在安全漏洞，该漏洞源于链路层上暂停加密过程处理不当，可能导致连接未加密，允许窃听者观察后续交换。

AI Predicted 6.5 Difficulty: Hard EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1041 · Exfiltration Over C2 Channel
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I. Basic Information for CVE-2025-52435

Vulnerability Information
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Vulnerability Title
Apache Mynewt NimBLE: Invalid error handling in pause encryption procedure in NimBLE controller
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache NimBLE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache NimBLE是美国阿帕奇（Apache）基金会的一个开源蓝牙 5.4 堆栈（主机和控制器），完全取代 Nordic 芯片组上的专有 SoftDevice。它是Apache Mynewt 项目的一部分。 Apache NimBLE 1.8.0及之前版本存在安全漏洞，该漏洞源于链路层上暂停加密过程处理不当，可能导致连接未加密，允许窃听者观察后续交换。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Mynewt NimBLE 0 ~ 1.8.0 -

II. Public POCs for CVE-2025-52435

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III. Intelligence Information for CVE-2025-52435

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Patches & Fixes for CVE-2025-52435 (1)

Mailing List Discussions for CVE-2025-52435 (1)

Same Patch Batch · Apache Software Foundation · 2026-01-10 · 4 CVEs total

CVE-2025-53470 Apache Mynewt NimBLE: Out-of-Bounds Write Vulnerability in NimBLE HCI H4 driver
CVE-2025-53477 Apache Mynewt NimBLE: NULL Pointer Dereference in NimBLE host HCI layer
CVE-2025-62235 Apache Mynewt NimBLE: Incorrect handling of SMP Security Request could lead to undesirable

IV. Related Vulnerabilities

Same product: Apache Mynewt NimBLE
Same vendor: Apache Software Foundation

V. Comments for CVE-2025-52435

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