Buffer Over-read in WLAN Firmware

published 2026-04-06 7 mo ago modified 2026-10-26 13 d ago also EUVD-2026-19320

cvss: 7.6; 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 11%
public exploits: 0; none known

Transient DOS when processing nonstandard FILS Discovery Frames with out-of-range action sizes during initial scans.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-04-06)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.6	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/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

References

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

Sources

CVE List CVE-2026-21367
NVD CVE-2026-21367

Fencer Vulns 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.

Summary