Vulnerability in Apache Nimble
CVE-2026-45815
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.
EPSS: 0.006 (46.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Nimble
- Apache Software Foundation Nimble — versions 0
Weakness classification (CWE)
References
- security@apache.org (Patch, patch)
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-45815?
- CVE-2026-45815 is a high-severity vulnerability in Apache Nimble, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2026-07-24.
- How severe is CVE-2026-45815?
- High severity. CVSS v3 base score is 7.5 out of 10.