How severe is CVE-2020-3678?

CVE-2020-3678 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-2020-3678 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3678?

CVE-2020-3678 primarily affects Qualcomm Agatti Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3678?

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-2020-3678 published?

CVE-2020-3678 was published on 2020-11-02 and last updated on 2026-06-17.

CVE-2020-3678

CVE-2020-3678 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. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Qualcomm Agatti Firmware
Published: 2020-11-02
Last modified: 2026-06-17

Description

u'A buffer overflow could occur if the API is improperly used due to UIE init does not contain a buffer size a param' in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking in Agatti, Kamorta, QCS404, QCS605, SDA845, SDM670, SDM710, SDM845, SXR1130

Frequently asked questions

What is CVE-2020-3678?: u'A buffer overflow could occur if the API is improperly used due to UIE init does not contain a buffer size a param' in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking in Agatti, Kamorta, QCS404, QCS605, SDA845, SDM670, SDM710, SDM845, SXR1130
How severe is CVE-2020-3678?: CVE-2020-3678 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-2020-3678 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3678?: CVE-2020-3678 primarily affects Qualcomm Agatti Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3678?: 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-2020-3678 published?: CVE-2020-3678 was published on 2020-11-02 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:qualcomm:agatti_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:kamorta_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs404_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs605_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sda845_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:sxr1130_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Agatti Firmware

CVE-2020-3692 — Critical (CVSS 9.8): u'Possible buffer overflow while updating output buffer for IMEI and Gateway Address due to lack of check of input…
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CVE-2020-3670 — Critical (CVSS 9.1): u'Potential out of bounds read while processing downlink NAS transport message due to improper length check of…
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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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