How severe is CVE-2026-44634?

CVE-2026-44634 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-44634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44634?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-44634 have an EU (EUVD) identifier?

Yes. CVE-2026-44634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35913.

When was CVE-2026-44634 published?

CVE-2026-44634 was published on 2026-06-10 and last updated on 2026-06-17.

CVE-2026-44634

CVE-2026-44634 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35913
Weakness: CWE-121
Published: 2026-06-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-44634?: 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.
How severe is CVE-2026-44634?: CVE-2026-44634 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-44634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-44634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-44634 have an EU (EUVD) identifier?: Yes. CVE-2026-44634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35913.
When was CVE-2026-44634 published?: CVE-2026-44634 was published on 2026-06-10 and last updated on 2026-06-17.

References

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