CVE-2026-25907
Published: 04 March 2026
Summary
CVE-2026-25907 is a medium-severity Overly Restrictive Account Lockout Mechanism (CWE-645) vulnerability in Dell Powerscale Onefs. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 21.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-7 (Unsuccessful Logon Attempts) and AC-2 (Account Management).
Deeper analysis
CVE-2026-25907 is an overly restrictive account lockout mechanism vulnerability in Dell PowerScale OneFS version 9.13.0.0. This flaw, associated with CWE-645, allows an unauthenticated attacker with remote access to potentially trigger a denial of service condition. The vulnerability has a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L), indicating medium severity with low availability impact but no confidentiality or integrity effects.
An unauthenticated attacker can exploit this vulnerability over the network with low complexity, requiring no privileges, user interaction, or special conditions. Successful exploitation leads to a denial of service, potentially disrupting access to the affected OneFS system by locking out accounts through repeated interactions with the lockout mechanism.
Dell's security advisory DSA-2026-095, detailed in KB article 000434591, provides a security update for Dell PowerScale OneFS addressing this overly restrictive account lockout mechanism vulnerability. Security practitioners should consult the advisory for patch deployment instructions and mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9402
Vulnerability details
Dell PowerScale OneFS, version 9.13.0.0, contains an overly restrictive account lockout mechanism vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauth vuln in account lockout mechanism directly enables exploitation of public-facing app (T1190) to trigger DoS via account lockouts (T1531) or app/system exploitation (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly governs the account lockout policy after unsuccessful logons, preventing an attacker from abusing an overly restrictive threshold to trigger DoS on OneFS.
Requires the system to protect against or limit the effects of denial-of-service attacks that could be induced by triggering the flawed lockout mechanism.
Establishes account management requirements that include defining and enforcing appropriate lockout parameters to avoid the overly restrictive behavior described in the CVE.