How severe is CVE-2020-15531?

CVE-2020-15531 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-15531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15531?

CVE-2020-15531 affects Silabs Bluetooth Low Energy Software Development Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15531?

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.

When was CVE-2020-15531 published?

CVE-2020-15531 was published on 2020-08-20 and last updated on 2026-06-17.

CVE-2020-15531

CVE-2020-15531 is a high-severity vulnerability in Silabs Bluetooth Low Energy Software Development Kit with a CVSS 3.x base score of 8.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Silabs Bluetooth Low Energy Software Development Kit
Published: 2020-08-20
Last modified: 2026-06-17

Description

Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. This is an over-the-air remote code execution vulnerability in Bluetooth LE in EFR32 SoCs and associated modules running Bluetooth SDK, supporting Central or Observer roles.

Frequently asked questions

What is CVE-2020-15531?: Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. This is an over-the-air remote code execution vulnerability in Bluetooth LE in EFR32 SoCs and associated modules running Bluetooth SDK, supporting Central or Observer roles.
How severe is CVE-2020-15531?: CVE-2020-15531 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-15531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15531?: CVE-2020-15531 affects Silabs Bluetooth Low Energy Software Development Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15531?: 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.
When was CVE-2020-15531 published?: CVE-2020-15531 was published on 2020-08-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:silabs:bluetooth_low_energy_software_development_kit:*:*:*:*:*:*:*:*

More vulnerabilities in Silabs Bluetooth Low Energy Software Development Kit

CVE-2020-15532 — Medium (CVSS 6.5): Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. This is an over-the-air…
CVE-2023-2683 — Medium (CVSS 5.3): A memory leak in the EFR32 Bluetooth LE stack 5.1.0 through 5.1.1 allows an attacker to send an invalid pairing message…
CVE-2023-41093 — Low (CVSS 3.1): Use After Free vulnerability in Silicon Labs Bluetooth SDK on 32 bit, ARM may allow an attacker with precise timing…

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