CVE-2023-33040

Buffer Over-read in Data Modem

7.5 High

Transient DOS in Data Modem during DTLS handshake.

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

0.34%Up 0.3 points since Jan 3, 2024

What each source reports

CVE List Score used 7.5

Buffer Over-read in Data Modem

Transient DOS in Data Modem during DTLS handshake.

Record: CVE-2023-33040
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-126
Updated: 2026-11-02

EUVDEUVD-2023-37229 7.5

Transient DOS in Data Modem during DTLS handshake.

Record: EUVD-2023-37229
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: 2026-11-02

GitHub AdvisoriesGHSA-vgh7-9mhq-v768 7.5

Transient DOS in Data Modem during DTLS handshake.

Transient DOS in Data Modem during DTLS handshake.

Record: GHSA-vgh7-9mhq-v768
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-126
Updated: 2026-11-02

NVD 7.5

Transient DOS in Data Modem during DTLS handshake.

Record: CVE-2023-33040
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-126
Updated: 2026-11-02

Affected products

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History

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

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

In short

CVE-2023-33040 is a high vulnerability (CVSS 7.5) in Qualcomm 315 5g Iot Modem Firmware, published January 2, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th 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