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CVE-2026-44634 SimpleBLE CVE debrief

CVE-2026-44634 is a HIGH-severity vulnerability with a CVSS score of 8.7. Multiple stack-based buffer overflow vulnerabilities were discovered in SimpleBLE, a cross-platform library and bindings for Bluetooth Low Energy (BLE). The vulnerabilities exist in the dongl backend's Protocol::simpleble_write function, as well as when processing manufacturer-specific data and service data in BLE advertisements. These issues have been patched in version 0.14.0.

Vendor
SimpleBLE
Product
SimpleBLE
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-10
Advisory published
2026-06-10
Advisory updated
2026-06-10

Who should care

Users of SimpleBLE versions prior to 0.14.0 should upgrade to the latest version to mitigate these vulnerabilities.

Technical summary

The vulnerabilities are caused by stack-based buffer overflows in the following areas: 1) the dongl backend's Protocol::simpleble_write function, which allows local, caller-controlled input; 2) processing manufacturer-specific data in BLE advertisements, which can be exploited remotely without pairing or connection; and 3) processing service data in BLE advertisements, also exploitable remotely without pairing or connection.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to SimpleBLE version 0.14.0 or later.
  • Review and apply patches as described in [ref-6](https://github.com/simpleble/simpleble/releases/tag/v0.14.0) and [ref-7](https://github.com/simpleble/simpleble/security/advisories/GHSA-8h89-q8m2-c8fp).

Evidence notes

CVE-2026-44634 was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-44634) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-44634).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-44634 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-44634

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-44634 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-44634

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.