What’s Vulnerable › Vulnerabilities

CVE-2026-44634: Stack buffer overflows in SimpleBLE

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-10 · updated 2026-07-23
• Weakness: CWE-121

Description

SimpleBLE is a cross-platform library and bindings for Bluetooth Low Energy (BLE). Prior to version 0.14.0, there are multiple stack-based buffer overflow vulnerabilities in SimpleBLE. There is a stack overflow vulnerability in the dongl backend’s Protocol::simpleble_write function (local, caller-controlled input). A stack overflow vulnerability when processing manufacturer-specific data in BLE advertisements (remote, no pairing or connection required). Lastly, a stack overflow vulnerability when processing service data in BLE advertisements (remote, no pairing or connection required). This issue has been patched in version 0.14.0.

Affected products

• simpleble: before 0.14.0

References

• https://github.com/simpleble/simpleble/commit/1501d59d76a4280268372afb1b157bf6caeacba6
• https://github.com/simpleble/simpleble/pull/466
• https://github.com/simpleble/simpleble/releases/tag/v0.14.0
• https://github.com/simpleble/simpleble/security/advisories/GHSA-8h89-q8m2-c8fp

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