Buffer Over-read in WLAN Firmware

published 2026-05-04 6mo ago modified 2026-10-07 last mo. also EUVD-2025-209628

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

Transient DOS when processing a malformed Fast Transition response frame with an invalid header structure during wireless roaming.

Is CVE-2025-47403 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 6mo ago (2026-05-04)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Qualcomm, Inc. Snapdragon

Classification

Weakness

CWE-126 Buffer Over-read
CWE-125 Out-of-bounds Read

References

docs.qualcomm.com /product/publicresources/securitybulletin/may-2026-bulletin.html
vendor-advisory

Sources

CVE List CVE-2025-47403
NVD CVE-2025-47403

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.