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.
References
| Link | Resource |
|---|---|
| https://github.com/apache/mynewt-nimble/commit/605c7585408bc3674818eeb7b6f478a8aefe9746 | Patch |
| https://lists.apache.org/thread/rll5m1ly2vg8jr76lp5ohrtspr5vlofy | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/07/24/12 | Mailing List Third Party Advisory |
Configurations
History
27 Jul 2026, 14:41
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/apache/mynewt-nimble/commit/605c7585408bc3674818eeb7b6f478a8aefe9746 - Patch | |
| References | () https://lists.apache.org/thread/rll5m1ly2vg8jr76lp5ohrtspr5vlofy - Mailing List, Vendor Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2026/07/24/12 - Mailing List, Third Party Advisory | |
| First Time |
Apache
Apache nimble |
|
| CPE | cpe:2.3:a:apache:nimble:*:*:*:*:*:*:*:* |
24 Jul 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
24 Jul 2026, 15:17
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
24 Jul 2026, 13:18
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-24 13:18
Updated : 2026-07-27 14:41
NVD link : CVE-2026-45812
Mitre link : CVE-2026-45812
CVE.ORG link : CVE-2026-45812
JSON object : View
Products Affected
apache
- nimble
CWE
CWE-131
Incorrect Calculation of Buffer Size
