Memory corruption via unchecked BASS subgroup parsing
Published Jul 24, 2026 · Updated Jul 24, 2026
Out-of-bounds writes in Apache NimBLE through 1.9.0 allow physically proximate attackers to corrupt memory through crafted BASS PDUs. The Add Source parser accepts excessive subgroup counts and consumes subgroup fields without confirming enough PDU data remains, while Modify Source mis-sizes the one-byte Num_Subgroups field and also lacks adequate length checks. A paired Bluetooth peer within radio range is required, and malformed input can overflow a stack buffer or read beyond the PDU.
Summary
What happened
Out-of-bounds writes in Apache NimBLE through 1.9.0 allow physically proximate attackers to corrupt memory through crafted BASS PDUs. The Add Source parser accepts excessive subgroup counts and consumes subgroup fields without confirming enough PDU data remains, while Modify Source mis-sizes the one-byte Num_Subgroups field and also lacks adequate length checks. A paired Bluetooth peer within radio range is required, and malformed input can overflow a stack buffer or read beyond the PDU.
The record
- CVE
- CVE-2026-45813
- Published
- Jul 24, 2026
- Updated
- Jul 24, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache NimBLE
- Classifications
- CWE-191, CWE-787, T1210
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 24, 2026CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=0 <=1.9.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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