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Vulnerabilities

Security fix · CVE-2025-64342

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework.

Published Nov 17, 2025 · catalog updated Nov 17, 2025 · ESF-IDF is the Espressif

Last checked Oct 28, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2025-64342 is not in CISA KEV. FIRST estimates a 43.00% chance of exploitation in the next 30 days. Check whether you run ESF-IDF is the Espressif.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (ESF-IDF is the Espressif).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
43.00%
Remediation
Version ranges on file
Affected products
vendor espressif esp-idf 5.4-beta1, < 5.4.3

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor espressif esp-idf 5.4-beta1, < 5.4.35.4-beta1, < 5.4.3

How to fix CVE-2025-64342

  • Upgrade

    CVE-2025-64342 lists a fix boundary at 5.4.3. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 5.4.3

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-64342 is not in CISA KEV. FIRST estimates a 43.00% chance of exploitation in the next 30 days. Check whether you run ESF-IDF is the Espressif.

Which versions are affected?

Compare what you have installed with espressif esp-idf 5.4-beta1, < 5.4.3 5.4-beta1, < 5.4.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 43.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 17, 2025 · EUVD

    Detected

    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 devic

  2. Nov 17, 2025 · EUVD

    Updated

    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 devic

Sources

  • CVE.orgVulnerability recordCVE-2025-64342

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-197854

    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 controll

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 17, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 28, 2026
  • EUVDOct 28, 2026