How severe is CVE-2020-11121?

CVE-2020-11121 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-2020-11121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11121?

CVE-2020-11121 primarily affects Qualcomm Qcm4290 Firmware. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11121?

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-2020-11121 published?

CVE-2020-11121 was published on 2020-11-12 and last updated on 2026-06-17.

CVE-2020-11121

CVE-2020-11121 is a high-severity vulnerability in Qualcomm Qcm4290 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% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Qualcomm Qcm4290 Firmware
Published: 2020-11-12
Last modified: 2026-06-17

Description

u'Possible buffer overflow in WIFI hal process due to usage of memcpy without checking length of destination buffer' in Snapdragon Auto, Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile in QCM4290, QCS4290, QM215, QSM8350, SA6145P, SA6155, SA6155P, SA8155, SA8155P, SC8180X, SC8180XP, SDX55, SDX55M, SM4250, SM4250P, SM6115, SM6115P, SM6125, SM6250, SM6350, SM7125, SM7225, SM7250, SM7250P, SM8150, SM8150P, SM8250, SM8350, SM8350P, SXR2130, SXR2130P

Frequently asked questions

What is CVE-2020-11121?: u'Possible buffer overflow in WIFI hal process due to usage of memcpy without checking length of destination buffer' in Snapdragon Auto, Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile in QCM4290, QCS4290, QM215, QSM8350, SA6145P, SA6155, SA6155P, SA8155, SA8155P, SC8180X, SC8180XP, SDX55, SDX55M, SM4250, SM4250P, SM6115, SM6115P, SM6125, SM6250, SM6350, SM7125, SM7225, SM7250, SM7250P, SM8150, SM8150P, SM8250, SM8350, SM8350P, SXR2130, SXR2130P
How severe is CVE-2020-11121?: CVE-2020-11121 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-2020-11121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11121?: CVE-2020-11121 primarily affects Qualcomm Qcm4290 Firmware. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11121?: 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-2020-11121 published?: CVE-2020-11121 was published on 2020-11-12 and last updated on 2026-06-17.

References

https://www.qualcomm.com/company/product-security/bulletins/november-2020-bulletin

Affected products (31)

cpe:2.3:o:qualcomm:qcm4290_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs4290_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qm215_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qsm8350_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6145p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8180x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8180xp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4250p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6115_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6115p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6125_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6350_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7125_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7225_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7250p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8150p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8350_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8350p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sxr2130_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sxr2130p_firmware:-:*:*:*:*:*:*:*

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