Apache NimBLE <=1.9.0: Reachable Assertion in ATT Parser via BLE Response
CVE-2026-45815 Published on July 24, 2026

Apache NimBLE: Remote reachable assertion in ATT Read Multiple Variable Response handler
Reachable Assertion vulnerability in Apache NimBLE. A specially crafted ATT Read Multiple Variable Response (BLE_ATT_OP_READ_MULT_VAR_RSP) may trigger assert in ATT parser. Severity is medium as this requires DUT to first send ATT Read Multiple Variable Request. This issue affects Apache NimBLE: through 1.9.0. Users are recommended to upgrade to version 1.10.0, which fixes the issue.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-45815 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is an assertion failure Vulnerability?

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

CVE-2026-45815 has been classified to as an assertion failure vulnerability or weakness.


Products Associated with CVE-2026-45815

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Apache Nimble
 

Affected Versions

Apache Software Foundation Apache NimBLE:

Exploit Probability

EPSS
0.37%
Percentile
29.81%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.