CVE-2020-16630: TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile

This month

MEDIUM 6.8MITIGATEMITIGATEMITIGATE

CVE-2020-16630 is a medium-severity flaw (CVSS 6.8) affecting 15.4-stack, ble5-stack, dynamic multi-protocal manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile. A LTK can be an unauthenticated-and-no-MITM-protection key created by Just Works or an authenticated-and-MITM-protection key created by Passkey Entry, Numeric Comparison or OOB. Assume that a victim mobile uses secure pairing to pair with a victim BLE device based on TI chips and generate an authenticated-and-MITM-protection LTK. If a fake mobile with the victim mobile’s MAC

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-863
Published	2021-09-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ti

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-20 20:15 UTCPublished CVE record published
2026-06-17 02:58 UTCUpdated Record last modified

ti 15.4-stack MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy 15.4-stack || rpm -q 15.4-stack || 15.4-stack --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

ti ble5-stack MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ble5-stack || rpm -q ble5-stack || ble5-stack --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

ti dynamic multi-protocal manager MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dynamic-multi-protocal-manager || rpm -q dynamic-multi-protocal-manager || dynamic-multi-protocal-manager --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

ti easylink MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy easylink || rpm -q easylink || easylink --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

ti openthread MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openthread || rpm -q openthread || openthread --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

ti z-stack MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy z-stack || rpm -q z-stack || z-stack --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-16630?

15.4-stack: mitigate or apply the listed mitigation; ble5-stack: mitigate or apply the listed mitigation; dynamic multi-protocal manager: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-16630 being exploited?

CVE-2020-16630 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-16630 affect?

CVE-2020-16630 affects 15.4-stack, ble5-stack, dynamic multi-protocal manager. Severity is medium (CVSS 6.8). TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile. A LTK can be an unauthenticated-and-no-MITM-protection key created by Just Works or an authenticated-and-MITM-protection key created by Passkey Entry, Numeric Comparis

How urgent is CVE-2020-16630?

Priority 42/100. Public exploit reference

References

← Back to latest CVEs