CVE-2026-45812Network attack vector

Bogus GAP data via pointer-size offset error

Published Jul 24, 2026 · Updated Jul 24, 2026

Out-of-bounds read in Apache NimBLE 1.9.0 and earlier allows attackers to deliver bogus advertising data to applications. The ble_hs_hci_evt_le_adv_rpt function advances between bundled reports using sizeof(rpt), the pointer size, instead of sizeof(*rpt), the report structure size. Reachability requires a third-party HCI controller that batches multiple legacy advertising reports; NimBLE's controller does not batch them.

CVSS severity6.5
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Apache NimBLE 1.9.0 and earlier allows attackers to deliver bogus advertising data to applications. The ble_hs_hci_evt_le_adv_rpt function advances between bundled reports using sizeof(rpt), the pointer size, instead of sizeof(*rpt), the report structure size. Reachability requires a third-party HCI controller that batches multiple legacy advertising reports; NimBLE's controller does not batch them.

The record

CVE
CVE-2026-45812
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
The Apache Software Foundation
Product
Apache NimBLE
Classifications
CWE-131
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache NimBLEversion=0 <=1.9.0

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-131Incorrect Calculation of Buffer Size

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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