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NimbleApplication · Apache

CVE-2026-45812

MEDIUM · 6.5 CVSS v3.1 Published 2026-07-24
Fix available
A fix is available. Upgrade to 1.10.0 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click 4 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Incorrect Calculation of Buffer Size vulnerability in Apache NimBLE when processing Legacy Advertising Report HCI event. When a single HCI advertising report event bundles multiple reports, NimBLE miscalculated the offset to the next report. This can cause the host to read past the end of the buffer and deliver a GAP event with bogus data to the application. Severity is low: NimBLE's own controller never batches multiple reports into one event, so this only matters when NimBLE's host is paired with a third-party controller that does. This issue affects Apache NimBLE: through 1.9.0. Users are recommended to upgrade to version 1.10.0, which fixes the issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
NimbleApplication
Affected:< 1.10.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.10.0 or later
Fixed in 1.10.0
Recommended fix High confidence

1.10.0

  1. 1. Identify all products or projects that include Apache NimBLE library
  2. 2. Check the current version of NimBLE being used (look for 1.9.0 or earlier)
  3. 3. Obtain Apache NimBLE version 1.10.0 from the official Apache NimBLE project (https://github.com/apache/mynewt-nimble)
  4. 4. Update the dependency or submodule reference in your project to point to version 1.10.0
  5. 5. Rebuild and test your application to ensure the update does not introduce regressions
  6. 6. Deploy the updated version to all environments
Caveat Review release notes for 1.10.0 for any API or behavioral changes that may affect your application

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-45812 in production — separate from our analysis above.

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What this is

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