Vulnerability Details CVE-2026-45813
Out-of-bounds Write, Integer Underflow (Wrap or Wraparound) vulnerability in Apache NimBLE BASS service.
Improper validation when parsing BASS service "Add Source" and "Modify Source" operation PDU could results in stack buffer overflow or arbitrary out-of-bound read.
This can be triggered by nearby devices over Bluetooth connection, however pairing is required prior to accessing BASS service, which depending on device configuration may or may not require user action.
This issue affects Apache NimBLE: through 1.9.0.
Users are recommended to upgrade to version 1.10.0, which fixes the issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 19.5%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2026-45813
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cpe:2.3:a:apache:nimble:1.0.0
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cpe:2.3:a:apache:nimble:1.1.0
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cpe:2.3:a:apache:nimble:1.2.0
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cpe:2.3:a:apache:nimble:1.3.0
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cpe:2.3:a:apache:nimble:1.4.0
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cpe:2.3:a:apache:nimble:1.5.0
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cpe:2.3:a:apache:nimble:1.6.0
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cpe:2.3:a:apache:nimble:1.7.0
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cpe:2.3:a:apache:nimble:1.8.0
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cpe:2.3:a:apache:nimble:1.9.0