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Vulnerabilities

Vulnerability · CVE-2025-53477

NULL Pointer Dereference vulnerability in Apache Nimble.

Published Jan 10, 2026 · catalog updated Jan 12, 2026 · Apache Software Foundation Apache Mynewt NimBLE

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-53477. EPSS is 0.81%. Act only if a listed version of Apache Software Foundation Apache Mynewt NimBLE is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.81%
Remediation
Vendor / distro source
Affected products
vendor Apache Software Foundation Apache Mynewt NimBLE 0 ≤1.8.0

NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low. This issue affects Apache NimBLE: through 1.8.0. Users are recommended to upgrade to version 1.9.0, which fixes the issue.

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 Apache Software Foundation Apache Mynewt NimBLE 0 ≤1.8.00 ≤1.8.0

How to fix CVE-2025-53477

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2025-53477. EPSS is 0.81%. Act only if a listed version of Apache Software Foundation Apache Mynewt NimBLE is installed.

Which versions are affected?

Compare what you have installed with Apache Software Foundation Apache Mynewt NimBLE 0 ≤1.8.0 0 ≤1.8.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.81%. 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. Jan 10, 2026 · EUVD

    Detected

    NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low. This issue affects Apache NimBLE: through 1.8.0. Users are recommended to upgrade to version 1.9.0, which fixes the i

  2. Jan 12, 2026 · EUVD

    Updated

    NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low. This issue affects Apache NimBLE: through 1.8.0. Users are recommended to upgrade to version 1.9.0, which fixes the i

Sources

  • CVE.orgVulnerability recordCVE-2025-53477

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-53477

    30-day exploitation probability 0.81%

    first.org
  • EUVDVulnerability recordEUVD-2026-1853

    NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered lo

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 3, 2026
  • CVE.orgOct 30, 2026
  • EUVDOct 30, 2026