🛡️ CVE-2026-45812 — nimble

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-131 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2026-45812 is classified as CWE-131: Incorrect Buffer Size Calculation. The size computed for an allocation does not match what is later written into it, producing an overflow.

Affected software

CVE-2026-45812 is recorded against 1 package.

  • nimble (fixed in 1.10.0)

Timeline and source

Published on 24 July 2026 and last revised on 27 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
lists.apache.org
www.openwall.com

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-131
Public Exploit ✅ No
Source NVD
Published 2026-07-24
Updated 2026-08-11
Modified 2026-07-27

Affected Packages

Software From version Fixed in
nimble — 1.10.0

Similar Threats

Vulnerability Monitoring

Track new vulnerabilities in nimble

CVE-2026-45812 is rated CVSS 6.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.