How severe is CVE-2020-3684?

CVE-2020-3684 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-3684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3684?

CVE-2020-3684 primarily affects Qualcomm Agatti Firmware. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3684?

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-2020-3684 published?

CVE-2020-3684 was published on 2020-11-02 and last updated on 2026-06-17.

CVE-2020-3684

CVE-2020-3684 is a high-severity vulnerability in Qualcomm Agatti Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qualcomm Agatti Firmware
Published: 2020-11-02
Last modified: 2026-06-17

Description

u'QSEE reads the access permission policy for the SMEM TOC partition from the SMEM TOC contents populated by XBL Loader and applies them without validation' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in Agatti, APQ8009, APQ8098, Bitra, IPQ6018, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9650, MSM8905, MSM8998, Nicobar, QCA6390, QCS404, QCS405, QCS605, QCS610, Rennell, SA415M, SA515M, SA6155P, SA8155P, Saipan, SC7180, SC8180X, SDA660, SDA845, SDM630, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130

Frequently asked questions

What is CVE-2020-3684?: u'QSEE reads the access permission policy for the SMEM TOC partition from the SMEM TOC contents populated by XBL Loader and applies them without validation' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in Agatti, APQ8009, APQ8098, Bitra, IPQ6018, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9650, MSM8905, MSM8998, Nicobar, QCA6390, QCS404, QCS405, QCS605, QCS610, Rennell, SA415M, SA515M, SA6155P, SA8155P, Saipan, SC7180, SC8180X, SDA660, SDA845, SDM630, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130
How severe is CVE-2020-3684?: CVE-2020-3684 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-3684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3684?: CVE-2020-3684 primarily affects Qualcomm Agatti Firmware. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3684?: 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-2020-3684 published?: CVE-2020-3684 was published on 2020-11-02 and last updated on 2026-06-17.

References

Affected products (45)

cpe:2.3:o:qualcomm:agatti_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8009_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:apq8098_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:bitra_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:ipq6018_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:kamorta_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:mdm9150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:mdm9205_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:mdm9206_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:mdm9607_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:mdm9650_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8905_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8998_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:nicobar_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs404_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs405_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs605_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:rennell_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa415m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa515m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:saipan_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc7180_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8180x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sda660_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sda845_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm630_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm636_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm660_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm670_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm710_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm845_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx20_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx24_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6150_firmware:-:*:*:*:*:*:*:*

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