CVE-2025-64342

ESF-IDF's ESP32 Bluetooth Controller Has an Invalid Access Address Vulnerability

MEDIUM

6.9

CVSS Score

Published: November 17, 2025 at 05:21 PM UTC

Updated: October 7, 2026 at 09:10 PM UTC

1 product affected across 1 vendorEsp Idf

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Severity

MEDIUM6.9

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. When the ESP32 is in advertising mode, if it receives a connection request containing an invalid Access Address (AA) of 0x00000000 or 0xFFFFFFFF, advertising may stop unexpectedly. In this case, the controller may incorrectly report a connection event to the host, which can cause the application layer to assume that the device has successfully established a connection. This issue has been fixed in versions 5.5.2, 5.4.3, 5.3.5, 5.2.6, and 5.1.7. At time of publication versions 5.5.2, 5.3.5, and 5.1.7 have not been released but are fixed respectively in commits 3b95b50, e3d7042, and 75967b5.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Esp Idf · Espressif

60%

v < 5.1.7v < 5.2.6v < 5.3.5v < 5.4.3v < 5.5.2

Affected range stops below 5.1.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.5.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (7)

x_refsource_CONFIRM

Source: cverecord

https://github.com/espressif/esp-idf/security/advisories/GHSA-8mg7-9qpg-p92v

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/309f031dd6b04de30c926a256508c65b0df95dfa

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/3b95b50703cd3301a370cffaa1cc299b1941fe2a

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/75967b578563ea7876dc215251cbb6d64bc9d768

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/8ec541023684d33b498fa21c5b4724bce748aa7b

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/bf66761962579f73aea682d1154b9c99b9d3d7dc

x_refsource_MISC

Source: cverecord

https://github.com/espressif/esp-idf/commit/e3d70429566ece1ef593d36aa4ebd320e0c95925

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMGitHub_M

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-754

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