CVE-2026-67271 Memory corruption in PowerStore 1000T
Unauthenticated remote attackers can exploit an out-of-bounds write in SMB/CIFS to cause persistent denial of service or execute arbitrary code on Dell PowerStore systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67271?
CVE-2026-67271 is a critical memory corruption vulnerability in Dell PowerStore 1000T, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Dell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in SMB/CIFS. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service and remote execution. This is a Critical vulnerability as a remote user could send a specially crafted SMB packet and cause a crash, that is persistent in case automatic restarts are enabled. Additionally, a more sophisticated attacker could use the same vulnerability for remote code execution.
Weakness: CWE-787
Which versions are affected by CVE-2026-67271?
How do I fix CVE-2026-67271?
No fix has been published for CVE-2026-67271 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-67271 being exploited?
There is no known exploitation of CVE-2026-67271 in the wild and no public exploit code.
Sources
Also known as GHSA-8vwp-cgv5-3q4x.