CVE-2023-33020

CVE-2023-33020 is a high-severity vulnerability in Qualcomm 9206 Lte Firmware with a CVSS 3.x base score of 7.5. 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-285.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• EPSS exploit prediction: 0% (22nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-285
• Affected product: Qualcomm 9206 Lte Firmware
• Published: 2023-09-05
• Last modified: 2026-06-17

Description

Transient DOS in WLAN Host when an invalid channel (like channel out of range) is received in STA during CSA IE.

Frequently asked questions

What is CVE-2023-33020?

Transient DOS in WLAN Host when an invalid channel (like channel out of range) is received in STA during CSA IE.

How severe is CVE-2023-33020?

CVE-2023-33020 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-33020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-33020?

CVE-2023-33020 primarily affects Qualcomm 9206 Lte Firmware. In total, 82 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-33020?

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-2023-33020 published?

CVE-2023-33020 was published on 2023-09-05 and last updated on 2026-06-17.

References

• https://www.qualcomm.com/company/product-security/bulletins/september-2023-bulletin

Affected products (82)

• cpe:2.3:o:qualcomm:9206_lte_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8017_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8052_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8056_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8076_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:ar8031_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:c-v2x_9150_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:csra6620_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:csra6640_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:fastconnect_6200_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:home_hub_100_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9250_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9628_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9650_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:msm8108_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:msm8209_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:msm8608_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:msm8909w_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:msm8996au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6174a_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6175a_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6554a_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6564a_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6564au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6574_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6584_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6584au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6595_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca9367_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca9377_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca9379_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:205_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:215_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd626_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdm429w_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdx20m_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm 9206 Lte Firmware

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