What is CVE-2026-40635?

CVE-2026-40635 is a medium-severity vulnerability in Dell Powerscale Onefs, classified under Insecure Temporary File. CVSS score: 5.4/10. Published 2026-09-09.

How severe is CVE-2026-40635?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Dell Powerscale Onefs

CVE-2026-40635

Dell PowerScale OneFS versions 9.12.0.0 through 9.13.1.0 contain an Insecure Temporary File vulnerability. A low privileged remote attacker could potentially exploit this vulnerability, leading to denial of service and information tampering.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Dell Powerscale Onefs

Weakness classification (CWE)

CWE-377 — Insecure Temporary File

References

security_alert@emc.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-40635?: CVE-2026-40635 is a medium-severity vulnerability in Dell Powerscale Onefs, classified under Insecure Temporary File. CVSS score: 5.4/10. Published 2026-09-09.
How severe is CVE-2026-40635?: Medium severity. CVSS v3 base score is 5.4 out of 10.