CVE-2026-21421 Privilege escalation in PowerScale OneFS
A local high-privileged attacker can exploit unnecessary privileges in Dell PowerScale OneFS to elevate their access rights.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21421?
CVE-2026-21421 is a medium-severity vulnerability in Dell Powerscale Onefs, published on 4 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dell PowerScale OneFS, versions prior to 9.10.1.6 and versions 9.11.0.0 through 9.12.0.1, contains an execution with unnecessary privileges vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to elevation of privileges.
Weakness: CWE-250
Which versions are affected by CVE-2026-21421?
It affects 1 product.
Products include Dell Powerscale Onefs.
How do I fix CVE-2026-21421?
No fix has been published for CVE-2026-21421 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21421 being exploited?
There is no known exploitation of CVE-2026-21421 in the wild and no public exploit code.
Other vulnerabilities in Dell Powerscale Onefs
Sources
Also known as GHSA-wpm4-hf9v-5h6m.