Write-what-where Condition in Primary Bootloader

published 2026-09-22 48 d ago modified 2026-10-06 33 d ago also EUVD-2026-84346

cvss: 6.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

Memory corruption while processing a crafted ELF file in the Primary Bootloader.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 48 d ago (2026-09-22)

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.9	CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD	3.1	6.3	CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Qualcomm, Inc. Snapdragon

Classification

Weakness

CWE-123 Write-what-where Condition

References

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

Sources

CVE List CVE-2026-25262
NVD CVE-2026-25262

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