CVE-2022-40521

CVE-2022-40521 is a high-severity vulnerability in Qualcomm 315 5g Iot Modem 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-287.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• EPSS exploit prediction: 0% (27th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-287
• Affected product: Qualcomm 315 5g Iot Modem Firmware
• Published: 2023-06-06
• Last modified: 2026-06-17

Description

Transient DOS due to improper authorization in Modem

Frequently asked questions

What is CVE-2022-40521?

Transient DOS due to improper authorization in Modem

How severe is CVE-2022-40521?

CVE-2022-40521 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-2022-40521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40521?

CVE-2022-40521 primarily affects Qualcomm 315 5g Iot Modem Firmware. In total, 242 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-40521?

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-2022-40521 published?

CVE-2022-40521 was published on 2023-06-06 and last updated on 2026-06-17.

References

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

Affected products (242)

• cpe:2.3:o:qualcomm:315_5g_iot_modem_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:9205_lte_modem_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:9206_lte_modem_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:9207_lte_modem_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8017_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:apq8037_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:ar6003_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:ar8035_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:csrb31024_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3991_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3998_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn6750_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn685x-5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn685x-1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn785x-1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn785x-5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm8207_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm8215_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm8215m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm8615m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9215_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9230_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9250_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9310_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9330_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9615_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9615m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9628_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9630_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:mdm9640_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:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm 315 5g Iot Modem Firmware

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• CVE-2023-28578 — Critical (CVSS 9.3): Memory corruption in Core Services while executing the command for removing a single event listener.
• CVE-2023-33072 — Critical (CVSS 9.3): Memory corruption in Core while processing control functions.
• CVE-2023-33030 — Critical (CVSS 9.3): Memory corruption in HLOS while running playready use-case.
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Other CWE-287 (Improper Authentication) vulnerabilities

• CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
• CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
• CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
• CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
• CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
• CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →