How severe is CVE-2020-16630?

CVE-2020-16630 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-16630 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16630?

CVE-2020-16630 primarily affects Ti 15.4-stack. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-16630?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-16630 published?

CVE-2020-16630 was published on 2021-09-20 and last updated on 2026-06-17.

CVE-2020-16630

CVE-2020-16630 is a medium-severity vulnerability in Ti 15.4-stack with a CVSS 3.x base score of 6.8. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Ti 15.4-stack
Published: 2021-09-20
Last modified: 2026-06-17

Description

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 address uses Just Works and pairs with the victim device, the generated LTK still has the property of authenticated-and-MITM-protection. Therefore, the fake mobile can access attributes with the authenticated read/write permission.

Frequently asked questions

What is CVE-2020-16630?: 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 address uses Just Works and pairs with the victim device, the generated LTK still has the property of authenticated-and-MITM-protection. Therefore, the fake mobile can access attributes with the authenticated read/write permission.
How severe is CVE-2020-16630?: CVE-2020-16630 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-16630 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16630?: CVE-2020-16630 primarily affects Ti 15.4-stack. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-16630?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-16630 published?: CVE-2020-16630 was published on 2021-09-20 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:ti:15.4-stack:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:ble5-stack:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:dynamic_multi-protocal_manager:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:easylink:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:openthread:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:z-stack:-:*:*:*:*:*:*:*
cpe:2.3:o:ti:real-time_operating_system:-:*:*:*:*:*:*:*

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