CVE-2025-21454

Buffer Over-read in WLAN Embedded SW

7.5 High

Transient DOS while processing received beacon frame.

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

0.24%Up 0.2 points since Jul 9, 2025

What each source reports

CVE List Score used 7.5

Buffer Over-read in WLAN Embedded SW

Transient DOS while processing received beacon frame.

Record: CVE-2025-21454
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-2025-20484 7.5

Transient DOS while processing received beacon frame.

Record: EUVD-2025-20484
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-4h9h-q39g-qf8m 7.5

Transient DOS while processing received beacon frame.

Transient DOS while processing received beacon frame.

Record: GHSA-4h9h-q39g-qf8m
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-125, CWE-126
Updated: 2026-11-02

NVD 7.5

Transient DOS while processing received beacon frame.

Record: CVE-2025-21454
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, CWE-125
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-2025-21454 is a high vulnerability (CVSS 7.5) in Qualcomm 315 5g Iot Modem Firmware, published July 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th 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