How severe is CVE-2020-3638?

CVE-2020-3638 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-2020-3638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3638?

CVE-2020-3638 primarily affects Qualcomm Agatti Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3638?

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-2020-3638 published?

CVE-2020-3638 was published on 2020-11-02 and last updated on 2026-06-17.

CVE-2020-3638

CVE-2020-3638 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% (11th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qualcomm Agatti Firmware
Published: 2020-11-02
Last modified: 2026-06-17

Description

u'An Unaligned address or size can propagate to the database due to improper page permissions and can lead to improper access control' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking in Agatti, Bitra, Kamorta, QCA6390, QCS404, QCS610, Rennell, SA515M, SC7180, SC8180X, SDX55, SM6150, SM7150, SM8150, SM8250, SXR2130

Frequently asked questions

What is CVE-2020-3638?: u'An Unaligned address or size can propagate to the database due to improper page permissions and can lead to improper access control' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking in Agatti, Bitra, Kamorta, QCA6390, QCS404, QCS610, Rennell, SA515M, SC7180, SC8180X, SDX55, SM6150, SM7150, SM8150, SM8250, SXR2130
How severe is CVE-2020-3638?: CVE-2020-3638 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-2020-3638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3638?: CVE-2020-3638 primarily affects Qualcomm Agatti Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3638?: 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-2020-3638 published?: CVE-2020-3638 was published on 2020-11-02 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:o:qualcomm:agatti_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:bitra_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:kamorta_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs404_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:rennell_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa515m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc7180_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8180x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sxr2130_firmware:-:*:*:*:*:*:*:*

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CVE-2020-3684 — High (CVSS 7.8): u'QSEE reads the access permission policy for the SMEM TOC partition from the SMEM TOC contents populated by XBL Loader…

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