Security readout for executives and security teams
Plain-English summary
CVE-2021-26993 affects NetApp E-Series SANtricity OS Controller Software 11.x before 11.70.1. A remote attacker could cause a partial denial of service against the controller web server. The sources do not indicate data theft, code execution, or confirmed active exploitation.
Executive priority
Prioritize remediation for internet-exposed or widely reachable management interfaces. Otherwise, schedule upgrade through normal storage maintenance windows because the known impact is partial web server DoS.
Technical view
The CVE describes a remotely exploitable partial DoS condition in the SANtricity OS controller web server for E-Series 11.x releases prior to 11.70.1. The public bundle provides no CVSS vector, CWE, root-cause detail, exploit prerequisites, or workaround beyond the version boundary.
Likely exposure
Exposure is likely limited to organizations running NetApp E-Series controllers with SANtricity OS 11.x before 11.70.1, especially where the management web server is reachable from untrusted networks.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV. Treat this as a remote availability risk to management access, with urgency increasing if controller web interfaces are broadly reachable.
Researcher notes
Public evidence is sparse. The bundle identifies affected versions and impact class, but does not provide technical root cause, CVSS scoring, attack complexity, authentication requirements, or named workarounds.
Mitigation direction
- Identify E-Series controllers running SANtricity OS 11.x before 11.70.1.
- Upgrade affected SANtricity OS installations to 11.70.1 or later where supported.
- Review the NetApp advisory for product-specific upgrade guidance.
- Limit management web interface access to trusted administrative networks.
Validation and detection
- Confirm each controller's SANtricity OS version is 11.70.1 or later.
- Verify affected assets are not externally reachable on management interfaces.
- Check change records for completed SANtricity OS remediation.
- Monitor controller web server availability after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-26993 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://security.netapp.com/advisory/NTAP-20210610-0001CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.