CVE-2022-40521

Improper authorization in Modem

7.5 High

Transient DOS due to improper authorization in Modem

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.35%Up 0.3 points since Jun 6, 2023

What each source reports

CVE List Score used 7.5

Improper authorization in Modem

Transient DOS due to improper authorization in Modem

Record: CVE-2022-40521
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-285
Updated: 2026-11-02

EUVDEUVD-2022-43796 7.5

Transient DOS due to improper authorization in Modem

Record: EUVD-2022-43796
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8f4c-mxmx-gjgv 7.5

Transient DOS due to improper authorization in Modem

Transient DOS due to improper authorization in Modem

Record: GHSA-8f4c-mxmx-gjgv
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-285, CWE-287
Updated: 2026-11-02

NVD 7.5

Transient DOS due to improper authorization in Modem

Record: CVE-2022-40521
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-285, CWE-287
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-40521 is a high vulnerability (CVSS 7.5) in Qualcomm 315 5g Iot Modem Firmware, published June 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

In short

References